/* eslint-disable */
;(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined'
    ? (module.exports = factory())
    : typeof define === 'function' && define.amd
    ? define(factory)
    : (global.wangEditor = factory())
})(this, function () {
  'use strict'

  /*poly-fill*/
  var polyfill = function () {
    // Object.assign
    if (typeof Object.assign != 'function') {
      Object.assign = function (target, varArgs) {
        // .length of function is 2
        if (target == null) {
          // TypeError if undefined or null
          throw new TypeError('Cannot convert undefined or null to object')
        }
        var to = Object(target)

        for (var index = 1; index < arguments.length; index++) {
          var nextSource = arguments[index]

          if (nextSource != null) {
            // Skip over if undefined or null
            for (var nextKey in nextSource) {
              // Avoid bugs when hasOwnProperty is shadowed
              if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
                to[nextKey] = nextSource[nextKey]
              }
            }
          }
        }
        return to
      }
    }

    // IE 中兼容 Element.prototype.matches
    if (!Element.prototype.matches) {
      Element.prototype.matches =
        Element.prototype.matchesSelector ||
        Element.prototype.mozMatchesSelector ||
        Element.prototype.msMatchesSelector ||
        Element.prototype.oMatchesSelector ||
        Element.prototype.webkitMatchesSelector ||
        function (s) {
          var matches = (this.document || this.ownerDocument).querySelectorAll(
              s
            ),
            i = matches.length
          while (--i >= 0 && matches.item(i) !== this) {}
          return i > -1
        }
    }
  }

  /* DOM 操作 API */
  // 根据 html 代码片段创建 dom 对象
  function createElemByHTML(html) {
    var div = void 0
    div = document.createElement('div')
    div.innerHTML = html
    return div.children
  }

  // 是否是 DOM List
  function isDOMList(selector) {
    if (!selector) {
      return false
    }
    if (selector instanceof HTMLCollection || selector instanceof NodeList) {
      return true
    }
    return false
  }

  // 封装 document.querySelectorAll
  function querySelectorAll(selector) {
    var result = document.querySelectorAll(selector)
    if (isDOMList(result)) {
      return result
    } else {
      return [result]
    }
  }

  // 记录所有的事件绑定
  var eventList = []

  // 创建构造函数
  function DomElement(selector) {
    if (!selector) {
      return
    }

    // selector 本来就是 DomElement 对象，直接返回
    if (selector instanceof DomElement) {
      return selector
    }

    this.selector = selector
    var nodeType = selector.nodeType

    // 根据 selector 得出的结果（如 DOM，DOM List）
    var selectorResult = []
    if (nodeType === 9) {
      // document 节点
      selectorResult = [selector]
    } else if (nodeType === 1) {
      // 单个 DOM 节点
      selectorResult = [selector]
    } else if (isDOMList(selector) || selector instanceof Array) {
      // DOM List 或者数组
      selectorResult = selector
    } else if (typeof selector === 'string') {
      // 字符串
      selector = selector.replace('/\n/mg', '').trim()
      if (selector.indexOf('<') === 0) {
        // 如 <div>
        selectorResult = createElemByHTML(selector)
      } else {
        // 如 #id .class
        selectorResult = querySelectorAll(selector)
      }
    }

    var length = selectorResult.length
    if (!length) {
      // 空数组
      return this
    }

    // 加入 DOM 节点
    var i = void 0
    for (i = 0; i < length; i++) {
      this[i] = selectorResult[i]
    }
    this.length = length
  }

  // 修改原型
  DomElement.prototype = {
    constructor: DomElement,

    // 类数组，forEach
    forEach: function forEach(fn) {
      var i = void 0
      for (i = 0; i < this.length; i++) {
        var elem = this[i]
        var result = fn.call(elem, elem, i)
        if (result === false) {
          break
        }
      }
      return this
    },

    // clone
    clone: function clone(deep) {
      var cloneList = []
      this.forEach(function (elem) {
        cloneList.push(elem.cloneNode(!!deep))
      })
      return $(cloneList)
    },

    // 获取第几个元素
    get: function get(index) {
      var length = this.length
      if (index >= length) {
        index = index % length
      }
      return $(this[index])
    },

    // 第一个
    first: function first() {
      return this.get(0)
    },

    // 最后一个
    last: function last() {
      var length = this.length
      return this.get(length - 1)
    },

    // 绑定事件
    on: function on(type, selector, fn) {
      // selector 不为空，证明绑定事件要加代理
      if (!fn) {
        fn = selector
        selector = null
      }

      // type 是否有多个
      var types = []
      types = type.split(/\s+/)

      return this.forEach(function (elem) {
        types.forEach(function (type) {
          if (!type) {
            return
          }

          // 记录下，方便后面解绑
          eventList.push({
            elem: elem,
            type: type,
            fn: fn,
          })

          if (!selector) {
            // 无代理
            elem.addEventListener(type, fn)
            return
          }

          // 有代理
          elem.addEventListener(type, function (e) {
            var target = e.target
            if (target.matches(selector)) {
              fn.call(target, e)
            }
          })
        })
      })
    },

    // 取消事件绑定
    off: function off(type, fn) {
      return this.forEach(function (elem) {
        elem.removeEventListener(type, fn)
      })
    },

    // 获取/设置 属性
    attr: function attr(key, val) {
      if (val == null) {
        // 获取值
        return this[0].getAttribute(key)
      } else {
        // 设置值
        return this.forEach(function (elem) {
          elem.setAttribute(key, val)
        })
      }
    },

    // 添加 class
    addClass: function addClass(className) {
      if (!className) {
        return this
      }
      return this.forEach(function (elem) {
        var arr = void 0
        if (elem.className) {
          // 解析当前 className 转换为数组
          arr = elem.className.split(/\s/)
          arr = arr.filter(function (item) {
            return !!item.trim()
          })
          // 添加 class
          if (arr.indexOf(className) < 0) {
            arr.push(className)
          }
          // 修改 elem.class
          elem.className = arr.join(' ')
        } else {
          elem.className = className
        }
      })
    },

    // 删除 class
    removeClass: function removeClass(className) {
      if (!className) {
        return this
      }
      return this.forEach(function (elem) {
        var arr = void 0
        if (elem.className) {
          // 解析当前 className 转换为数组
          arr = elem.className.split(/\s/)
          arr = arr.filter(function (item) {
            item = item.trim()
            // 删除 class
            if (!item || item === className) {
              return false
            }
            return true
          })
          // 修改 elem.class
          elem.className = arr.join(' ')
        }
      })
    },

    // 修改 css
    css: function css(key, val) {
      var currentStyle = key + ':' + val + ';'
      return this.forEach(function (elem) {
        var style = (elem.getAttribute('style') || '').trim()
        var styleArr = void 0,
          resultArr = []
        if (style) {
          // 将 style 按照 ; 拆分为数组
          styleArr = style.split(';')
          styleArr.forEach(function (item) {
            // 对每项样式，按照 : 拆分为 key 和 value
            var arr = item.split(':').map(function (i) {
              return i.trim()
            })
            if (arr.length === 2) {
              resultArr.push(arr[0] + ':' + arr[1])
            }
          })
          // 替换或者新增
          resultArr = resultArr.map(function (item) {
            if (item.indexOf(key) === 0) {
              return currentStyle
            } else {
              return item
            }
          })
          if (resultArr.indexOf(currentStyle) < 0) {
            resultArr.push(currentStyle)
          }
          // 结果
          elem.setAttribute('style', resultArr.join('; '))
        } else {
          // style 无值
          elem.setAttribute('style', currentStyle)
        }
      })
    },

    // 显示
    show: function show() {
      return this.css('display', 'block')
    },

    // 隐藏
    hide: function hide() {
      return this.css('display', 'none')
    },

    // 获取子节点
    children: function children() {
      var elem = this[0]
      if (!elem) {
        return null
      }

      return $(elem.children)
    },

    // 获取子节点（包括文本节点）
    childNodes: function childNodes() {
      var elem = this[0]
      if (!elem) {
        return null
      }

      return $(elem.childNodes)
    },

    // 增加子节点
    append: function append($children) {
      return this.forEach(function (elem) {
        $children.forEach(function (child) {
          elem.appendChild(child)
        })
      })
    },

    // 移除当前节点
    remove: function remove() {
      return this.forEach(function (elem) {
        if (elem.remove) {
          elem.remove()
        } else {
          var parent = elem.parentElement
          parent && parent.removeChild(elem)
        }
      })
    },

    // 是否包含某个子节点
    isContain: function isContain($child) {
      var elem = this[0]
      var child = $child[0]
      return elem.contains(child)
    },

    // 尺寸数据
    getSizeData: function getSizeData() {
      var elem = this[0]
      return elem.getBoundingClientRect() // 可得到 bottom height left right top width 的数据
    },

    // 封装 nodeName
    getNodeName: function getNodeName() {
      var elem = this[0]
      return elem.nodeName
    },

    // 从当前元素查找
    find: function find(selector) {
      var elem = this[0]
      return $(elem.querySelectorAll(selector))
    },

    // 获取当前元素的 text
    text: function text(val) {
      if (!val) {
        // 获取 text
        var elem = this[0]
        return elem.innerHTML.replace(/<.*?>/g, function () {
          return ''
        })
      } else {
        // 设置 text
        return this.forEach(function (elem) {
          elem.innerHTML = val
        })
      }
    },

    // 获取 html
    html: function html(value) {
      var elem = this[0]
      if (value == null) {
        return elem.innerHTML
      } else {
        elem.innerHTML = value
        return this
      }
    },

    // 获取 value
    val: function val() {
      var elem = this[0]
      return elem.value.trim()
    },

    // focus
    focus: function focus() {
      return this.forEach(function (elem) {
        elem.focus()
      })
    },

    // parent
    parent: function parent() {
      var elem = this[0]
      return $(elem.parentElement)
    },

    // parentUntil 找到符合 selector 的父节点
    parentUntil: function parentUntil(selector, _currentElem) {
      var results = document.querySelectorAll(selector)
      var length = results.length
      if (!length) {
        // 传入的 selector 无效
        return null
      }

      var elem = _currentElem || this[0]
      if (elem.nodeName === 'BODY') {
        return null
      }

      var parent = elem.parentElement
      var i = void 0
      for (i = 0; i < length; i++) {
        if (parent === results[i]) {
          // 找到，并返回
          return $(parent)
        }
      }

      // 继续查找
      return this.parentUntil(selector, parent)
    },

    // 判断两个 elem 是否相等
    equal: function equal($elem) {
      if ($elem.nodeType === 1) {
        return this[0] === $elem
      } else {
        return this[0] === $elem[0]
      }
    },

    // 将该元素插入到某个元素前面
    insertBefore: function insertBefore(selector) {
      var $referenceNode = $(selector)
      var referenceNode = $referenceNode[0]
      if (!referenceNode) {
        return this
      }
      return this.forEach(function (elem) {
        var parent = referenceNode.parentNode
        parent.insertBefore(elem, referenceNode)
      })
    },

    // 将该元素插入到某个元素后面
    insertAfter: function insertAfter(selector) {
      var $referenceNode = $(selector)
      var referenceNode = $referenceNode[0]
      if (!referenceNode) {
        return this
      }
      return this.forEach(function (elem) {
        var parent = referenceNode.parentNode
        if (parent.lastChild === referenceNode) {
          // 最后一个元素
          parent.appendChild(elem)
        } else {
          // 不是最后一个元素
          parent.insertBefore(elem, referenceNode.nextSibling)
        }
      })
    },
  }

  // new 一个对象
  function $(selector) {
    return new DomElement(selector)
  }

  // 解绑所有事件，用于销毁编辑器
  $.offAll = function () {
    eventList.forEach(function (item) {
      var elem = item.elem
      var type = item.type
      var fn = item.fn
      // 解绑
      elem.removeEventListener(type, fn)
    })
  }

  /*
    配置信息
*/

  var config = {
    // 默认菜单配置
    menus: [
      'head',
      'bold',
      'fontSize',
      'fontName',
      'italic',
      'underline',
      'strikeThrough',
      'foreColor',
      'backColor',
      'link',
      'list',
      'justify',
      'quote',
      'emoticon',
      'image',
      'table',
      'video',
      'code',
      'undo',
      'redo',
    ],

    fontNames: ['宋体', '微软雅黑', 'Arial', 'Tahoma', 'Verdana'],

    colors: [
      '#000000',
      '#eeece0',
      '#1c487f',
      '#4d80bf',
      '#c24f4a',
      '#8baa4a',
      '#7b5ba1',
      '#46acc8',
      '#f9963b',
      '#ffffff',
    ],

    // // 语言配置
    // lang: {
    //     '设置标题': 'title',
    //     '正文': 'p',
    //     '链接文字': 'link text',
    //     '链接': 'link',
    //     '插入': 'insert',
    //     '创建': 'init'
    // },
    // 表情
    emotions: [
      {
        // tab 的标题
        title: '默认',
        // type -> 'emoji' / 'image'
        type: 'image',
        // content -> 数组
        content: [
          {
            alt: '[坏笑]',
            src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/50/pcmoren_huaixiao_org.png',
          },
          {
            alt: '[舔屏]',
            src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/40/pcmoren_tian_org.png',
          },
          {
            alt: '[污]',
            src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/3c/pcmoren_wu_org.png',
          },
        ],
      },
      {
        // tab 的标题
        title: '新浪',
        // type -> 'emoji' / 'image'
        type: 'image',
        // content -> 数组
        content: [
          {
            src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/7a/shenshou_thumb.gif',
            alt: '[草泥马]',
          },
          {
            src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/60/horse2_thumb.gif',
            alt: '[神马]',
          },
          {
            src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/bc/fuyun_thumb.gif',
            alt: '[浮云]',
          },
        ],
      },
      {
        // tab 的标题
        title: 'emoji',
        // type -> 'emoji' / 'image'
        type: 'emoji',
        // content -> 数组
        content:
          '😀 😃 😄 😁 😆 😅 😂 😊 😇 🙂 🙃 😉 😓 😪 😴 🙄 🤔 😬 🤐'.split(
            /\s/
          ),
      },
    ],

    // 编辑区域的 z-index
    zIndex: 10000,

    // 是否开启 debug 模式（debug 模式下错误会 throw error 形式抛出）
    debug: false,

    // 插入链接时候的格式校验
    linkCheck: function linkCheck(text, link) {
      // text 是插入的文字
      // link 是插入的链接
      return true // 返回 true 即表示成功
      // return '校验失败' // 返回字符串即表示失败的提示信息
    },

    // 插入网络图片的校验
    linkImgCheck: function linkImgCheck(src) {
      // src 即图片的地址
      return true // 返回 true 即表示成功
      // return '校验失败'  // 返回字符串即表示失败的提示信息
    },

    // 粘贴过滤样式，默认开启
    pasteFilterStyle: true,

    // 粘贴内容时，忽略图片。默认关闭
    pasteIgnoreImg: false,

    // 对粘贴的文字进行自定义处理，返回处理后的结果。编辑器会将处理后的结果粘贴到编辑区域中。
    // IE 暂时不支持
    pasteTextHandle: function pasteTextHandle(content) {
      // content 即粘贴过来的内容（html 或 纯文本），可进行自定义处理然后返回
      return content
    },

    // onchange 事件
    // onchange: function (html) {
    //     // html 即变化之后的内容
    //     console.log(html)
    // },
    // 是否显示添加网络图片的 tab
    showLinkImg: true,

    // 插入网络图片的回调
    linkImgCallback: function linkImgCallback(url) {
      // console.log(url)  // url 即插入图片的地址
    },

    // 默认上传图片 max size: 5M
    uploadImgMaxSize: 5 * 1024 * 1024,

    // 配置一次最多上传几个图片
    // uploadImgMaxLength: 5,
    // 上传图片，是否显示 base64 格式
    uploadImgShowBase64: false,

    // 上传图片，server 地址（如果有值，则 base64 格式的配置则失效）
    // uploadImgServer: '/upload',
    // 自定义配置 filename
    uploadFileName: '',

    // 上传图片的自定义参数
    uploadImgParams: {
      // token: 'abcdef12345'
    },

    // 上传图片的自定义header
    uploadImgHeaders: {
      // 'Accept': 'text/x-json'
    },

    // 配置 XHR withCredentials
    withCredentials: false,

    // 自定义上传图片超时时间 ms
    uploadImgTimeout: 10000,

    // 上传图片 hook
    uploadImgHooks: {
      // customInsert: function (insertLinkImg, result, editor) {
      //     console.log('customInsert')
      //     // 图片上传并返回结果，自定义插入图片的事件，而不是编辑器自动插入图片
      //     const data = result.data1 || []
      //     data.forEach(link => {
      //         insertLinkImg(link)
      //     })
      // },
      before: function before(xhr, editor, files) {
        // 图片上传之前触发
        // 如果返回的结果是 {prevent: true, msg: 'xxxx'} 则表示用户放弃上传
        // return {
        //     prevent: true,
        //     msg: '放弃上传'
        // }
      },
      success: function success(xhr, editor, result) {
        // 图片上传并返回结果，图片插入成功之后触发
      },
      fail: function fail(xhr, editor, result) {
        // 图片上传并返回结果，但图片插入错误时触发
      },
      error: function error(xhr, editor) {
        // 图片上传出错时触发
      },
      timeout: function timeout(xhr, editor) {
        // 图片上传超时时触发
      },
    },

    // 是否上传七牛云，默认为 false
    qiniu: false,
  }

  /*
    工具
*/

  // 和 UA 相关的属性
  var UA = {
    _ua: navigator.userAgent,

    // 是否 webkit
    isWebkit: function isWebkit() {
      var reg = /webkit/i
      return reg.test(this._ua)
    },

    // 是否 IE
    isIE: function isIE() {
      return 'ActiveXObject' in window
    },
  }

  // 遍历对象
  function objForEach(obj, fn) {
    var key = void 0,
      result = void 0
    for (key in obj) {
      if (obj.hasOwnProperty(key)) {
        result = fn.call(obj, key, obj[key])
        if (result === false) {
          break
        }
      }
    }
  }

  // 遍历类数组
  function arrForEach(fakeArr, fn) {
    var i = void 0,
      item = void 0,
      result = void 0
    var length = fakeArr.length || 0
    for (i = 0; i < length; i++) {
      item = fakeArr[i]
      result = fn.call(fakeArr, item, i)
      if (result === false) {
        break
      }
    }
  }

  // 获取随机数
  function getRandom(prefix) {
    return prefix + Math.random().toString().slice(2)
  }

  // 替换 html 特殊字符
  function replaceHtmlSymbol(html) {
    if (html == null) {
      return ''
    }
    return html
      .replace(/</gm, '&lt;')
      .replace(/>/gm, '&gt;')
      .replace(/"/gm, '&quot;')
      .replace(/(\r\n|\r|\n)/g, '<br/>')
  }

  // 返回百分比的格式

  // 判断是不是 function
  function isFunction(fn) {
    return typeof fn === 'function'
  }

  /*
    bold-menu
*/
  // 构造函数
  function Bold(editor) {
    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu">\n            <i class="w-e-icon-bold"></i>\n        </div>'
    )
    this.type = 'click'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Bold.prototype = {
    constructor: Bold,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里
      var editor = this.editor
      var isSeleEmpty = editor.selection.isSelectionEmpty()

      if (isSeleEmpty) {
        // 选区是空的，插入并选中一个“空白”
        editor.selection.createEmptyRange()
      }

      // 执行 bold 命令
      editor.cmd.do('bold')

      if (isSeleEmpty) {
        // 需要将选取折叠起来
        editor.selection.collapseRange()
        editor.selection.restoreSelection()
      }
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor
      var $elem = this.$elem
      if (editor.cmd.queryCommandState('bold')) {
        this._active = true
        $elem.addClass('w-e-active')
      } else {
        this._active = false
        $elem.removeClass('w-e-active')
      }
    },
  }

  /*
    替换多语言
 */

  var replaceLang = function (editor, str) {
    var langArgs = editor.config.langArgs || []
    var result = str

    langArgs.forEach(function (item) {
      var reg = item.reg
      var val = item.val

      if (reg.test(result)) {
        result = result.replace(reg, function () {
          return val
        })
      }
    })

    return result
  }

  /* droplist */
  var _emptyFn = function _emptyFn() {}

  // 构造函数
  function DropList(menu, opt) {
    var _this = this

    // droplist 所依附的菜单
    var editor = menu.editor
    this.menu = menu
    this.opt = opt
    // 容器
    var $container = $('<div class="w-e-droplist"></div>')

    // 标题
    var $title = opt.$title
    var titleHtml = void 0
    if ($title) {
      // 替换多语言
      titleHtml = $title.html()
      titleHtml = replaceLang(editor, titleHtml)
      $title.html(titleHtml)

      $title.addClass('w-e-dp-title')
      $container.append($title)
    }

    var list = opt.list || []
    var type = opt.type || 'list' // 'list' 列表形式（如“标题”菜单） / 'inline-block' 块状形式（如“颜色”菜单）
    var onClick = opt.onClick || _emptyFn

    // 加入 DOM 并绑定事件
    var $list = $(
      '<ul class="' + (type === 'list' ? 'w-e-list' : 'w-e-block') + '"></ul>'
    )
    $container.append($list)
    list.forEach(function (item) {
      var $elem = item.$elem

      // 替换多语言
      var elemHtml = $elem.html()
      elemHtml = replaceLang(editor, elemHtml)
      $elem.html(elemHtml)

      var value = item.value
      var $li = $('<li class="w-e-item"></li>')
      if ($elem) {
        $li.append($elem)
        $list.append($li)
        $li.on('click', function (e) {
          onClick(value)

          // 隐藏
          _this.hideTimeoutId = setTimeout(function () {
            _this.hide()
          }, 0)
        })
      }
    })

    // 绑定隐藏事件
    $container.on('mouseleave', function (e) {
      _this.hideTimeoutId = setTimeout(function () {
        _this.hide()
      }, 0)
    })

    // 记录属性
    this.$container = $container

    // 基本属性
    this._rendered = false
    this._show = false
  }

  // 原型
  DropList.prototype = {
    constructor: DropList,

    // 显示（插入DOM）
    show: function show() {
      if (this.hideTimeoutId) {
        // 清除之前的定时隐藏
        clearTimeout(this.hideTimeoutId)
      }

      var menu = this.menu
      var $menuELem = menu.$elem
      var $container = this.$container
      if (this._show) {
        return
      }
      if (this._rendered) {
        // 显示
        $container.show()
      } else {
        // 加入 DOM 之前先定位位置
        var menuHeight = $menuELem.getSizeData().height || 0
        var width = this.opt.width || 100 // 默认为 100
        $container
          .css('margin-top', menuHeight + 'px')
          .css('width', width + 'px')

        // 加入到 DOM
        $menuELem.append($container)
        this._rendered = true
      }

      // 修改属性
      this._show = true
    },

    // 隐藏（移除DOM）
    hide: function hide() {
      if (this.showTimeoutId) {
        // 清除之前的定时显示
        clearTimeout(this.showTimeoutId)
      }

      var $container = this.$container
      if (!this._show) {
        return
      }
      // 隐藏并需改属性
      $container.hide()
      this._show = false
    },
  }

  /*
    menu - header
*/
  // 构造函数
  function Head(editor) {
    var _this = this

    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu"><i class="w-e-icon-header"></i></div>'
    )
    this.type = 'droplist'

    // 当前是否 active 状态
    this._active = false

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 100,
      $title: $('<p>设置标题</p>'),
      type: 'list',
      // droplist 以列表形式展示
      list: [
        {
          $elem: $('<h1>H1</h1>'),
          value: '<h1>',
        },
        {
          $elem: $('<h2>H2</h2>'),
          value: '<h2>',
        },
        {
          $elem: $('<h3>H3</h3>'),
          value: '<h3>',
        },
        {
          $elem: $('<h4>H4</h4>'),
          value: '<h4>',
        },
        {
          $elem: $('<h5>H5</h5>'),
          value: '<h5>',
        },
        {
          $elem: $('<p>正文</p>'),
          value: '<p>',
        },
      ],
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 Head 对象
        _this._command(value)
      },
    })
  }

  // 原型
  Head.prototype = {
    constructor: Head,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor

      var $selectionElem = editor.selection.getSelectionContainerElem()
      if (editor.$textElem.equal($selectionElem)) {
        // 不能选中多行来设置标题，否则会出现问题
        // 例如选中的是 <p>xxx</p><p>yyy</p> 来设置标题，设置之后会成为 <h1>xxx<br>yyy</h1> 不符合预期
        return
      }

      editor.cmd.do('formatBlock', value)
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor
      var $elem = this.$elem
      var reg = /^h/i
      var cmdValue = editor.cmd.queryCommandValue('formatBlock')
      if (reg.test(cmdValue)) {
        this._active = true
        $elem.addClass('w-e-active')
      } else {
        this._active = false
        $elem.removeClass('w-e-active')
      }
    },
  }

  /*
    menu - fontSize
*/

  // 构造函数
  function FontSize(editor) {
    var _this = this

    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu"><i class="w-e-icon-text-heigh"></i></div>'
    )
    this.type = 'droplist'

    // 当前是否 active 状态
    this._active = false

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 160,
      $title: $('<p>字号</p>'),
      type: 'list',
      // droplist 以列表形式展示
      list: [
        {
          $elem: $('<span style="font-size: x-small;">x-small</span>'),
          value: '1',
        },
        {
          $elem: $('<span style="font-size: small;">small</span>'),
          value: '2',
        },
        {
          $elem: $('<span>normal</span>'),
          value: '3',
        },
        {
          $elem: $('<span style="font-size: large;">large</span>'),
          value: '4',
        },
        {
          $elem: $('<span style="font-size: x-large;">x-large</span>'),
          value: '5',
        },
        {
          $elem: $('<span style="font-size: xx-large;">xx-large</span>'),
          value: '6',
        },
      ],
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 FontSize 对象
        _this._command(value)
      },
    })
  }

  // 原型
  FontSize.prototype = {
    constructor: FontSize,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor
      editor.cmd.do('fontSize', value)
    },
  }

  /*
    menu - fontName
*/

  // 构造函数
  function FontName(editor) {
    var _this = this

    this.editor = editor
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-font"></i></div>')
    this.type = 'droplist'

    // 当前是否 active 状态
    this._active = false

    // 获取配置的字体
    var config = editor.config
    var fontNames = config.fontNames || []

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 100,
      $title: $('<p>字体</p>'),
      type: 'list',
      // droplist 以列表形式展示
      list: fontNames.map(function (fontName) {
        return {
          $elem: $(
            '<span style="font-family: ' +
              fontName +
              ';">' +
              fontName +
              '</span>'
          ),
          value: fontName,
        }
      }),
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 FontName 对象
        _this._command(value)
      },
    })
  }

  // 原型
  FontName.prototype = {
    constructor: FontName,

    _command: function _command(value) {
      var editor = this.editor
      editor.cmd.do('fontName', value)
    },
  }

  /*
    panel
*/

  var emptyFn = function emptyFn() {}

  // 记录已经显示 panel 的菜单
  var _isCreatedPanelMenus = []

  // 构造函数
  function Panel(menu, opt) {
    this.menu = menu
    this.opt = opt
  }

  // 原型
  Panel.prototype = {
    constructor: Panel,

    // 显示（插入DOM）
    show: function show() {
      var _this = this

      var menu = this.menu
      if (_isCreatedPanelMenus.indexOf(menu) >= 0) {
        // 该菜单已经创建了 panel 不能再创建
        return
      }

      var editor = menu.editor
      var $body = $('body')
      var $textContainerElem = editor.$textContainerElem
      var opt = this.opt

      // panel 的容器
      var $container = $('<div class="w-e-panel-container"></div>')
      var width = opt.width || 300 // 默认 300px
      $container
        .css('width', width + 'px')
        .css('margin-left', (0 - width) / 2 + 'px')

      // 添加关闭按钮
      var $closeBtn = $('<i class="w-e-icon-close w-e-panel-close"></i>')
      $container.append($closeBtn)
      $closeBtn.on('click', function () {
        _this.hide()
      })

      // 准备 tabs 容器
      var $tabTitleContainer = $('<ul class="w-e-panel-tab-title"></ul>')
      var $tabContentContainer = $('<div class="w-e-panel-tab-content"></div>')
      $container.append($tabTitleContainer).append($tabContentContainer)

      // 设置高度
      var height = opt.height
      if (height) {
        $tabContentContainer
          .css('height', height + 'px')
          .css('overflow-y', 'auto')
      }

      // tabs
      var tabs = opt.tabs || []
      var tabTitleArr = []
      var tabContentArr = []
      tabs.forEach(function (tab, tabIndex) {
        if (!tab) {
          return
        }
        var title = tab.title || ''
        var tpl = tab.tpl || ''

        // 替换多语言
        title = replaceLang(editor, title)
        tpl = replaceLang(editor, tpl)

        // 添加到 DOM
        var $title = $('<li class="w-e-item">' + title + '</li>')
        $tabTitleContainer.append($title)
        var $content = $(tpl)
        $tabContentContainer.append($content)

        // 记录到内存
        $title._index = tabIndex
        tabTitleArr.push($title)
        tabContentArr.push($content)

        // 设置 active 项
        if (tabIndex === 0) {
          $title._active = true
          $title.addClass('w-e-active')
        } else {
          $content.hide()
        }

        // 绑定 tab 的事件
        $title.on('click', function (e) {
          if ($title._active) {
            return
          }
          // 隐藏所有的 tab
          tabTitleArr.forEach(function ($title) {
            $title._active = false
            $title.removeClass('w-e-active')
          })
          tabContentArr.forEach(function ($content) {
            $content.hide()
          })

          // 显示当前的 tab
          $title._active = true
          $title.addClass('w-e-active')
          $content.show()
        })
      })

      // 绑定关闭事件
      $container.on('click', function (e) {
        // 点击时阻止冒泡
        e.stopPropagation()
      })
      $body.on('click', function (e) {
        _this.hide()
      })

      // 添加到 DOM
      $textContainerElem.append($container)

      // 绑定 opt 的事件，只有添加到 DOM 之后才能绑定成功
      tabs.forEach(function (tab, index) {
        if (!tab) {
          return
        }
        var events = tab.events || []
        events.forEach(function (event) {
          var selector = event.selector
          var type = event.type
          var fn = event.fn || emptyFn
          var $content = tabContentArr[index]
          $content.find(selector).on(type, function (e) {
            e.stopPropagation()
            var needToHide = fn(e)
            // 执行完事件之后，是否要关闭 panel
            if (needToHide) {
              _this.hide()
            }
          })
        })
      })

      // focus 第一个 elem
      var $inputs = $container.find('input[type=text],textarea')
      if ($inputs.length) {
        $inputs.get(0).focus()
      }

      // 添加到属性
      this.$container = $container

      // 隐藏其他 panel
      this._hideOtherPanels()
      // 记录该 menu 已经创建了 panel
      _isCreatedPanelMenus.push(menu)
    },

    // 隐藏（移除DOM）
    hide: function hide() {
      var menu = this.menu
      var $container = this.$container
      if ($container) {
        $container.remove()
      }

      // 将该 menu 记录中移除
      _isCreatedPanelMenus = _isCreatedPanelMenus.filter(function (item) {
        if (item === menu) {
          return false
        } else {
          return true
        }
      })
    },

    // 一个 panel 展示时，隐藏其他 panel
    _hideOtherPanels: function _hideOtherPanels() {
      if (!_isCreatedPanelMenus.length) {
        return
      }
      _isCreatedPanelMenus.forEach(function (menu) {
        var panel = menu.panel || {}
        if (panel.hide) {
          panel.hide()
        }
      })
    },
  }

  /*
    menu - link
*/
  // 构造函数
  function Link(editor) {
    this.editor = editor
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-link"></i></div>')
    this.type = 'panel'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Link.prototype = {
    constructor: Link,

    // 点击事件
    onClick: function onClick(e) {
      var editor = this.editor
      var $linkelem = void 0

      if (this._active) {
        // 当前选区在链接里面
        $linkelem = editor.selection.getSelectionContainerElem()
        if (!$linkelem) {
          return
        }
        // 将该元素都包含在选取之内，以便后面整体替换
        editor.selection.createRangeByElem($linkelem)
        editor.selection.restoreSelection()
        // 显示 panel
        this._createPanel($linkelem.text(), $linkelem.attr('href'))
      } else {
        // 当前选区不在链接里面
        if (editor.selection.isSelectionEmpty()) {
          // 选区是空的，未选中内容
          this._createPanel('', '')
        } else {
          // 选中内容了
          this._createPanel(editor.selection.getSelectionText(), '')
        }
      }
    },

    // 创建 panel
    _createPanel: function _createPanel(text, link) {
      var _this = this

      // panel 中需要用到的id
      var inputLinkId = getRandom('input-link')
      var inputTextId = getRandom('input-text')
      var btnOkId = getRandom('btn-ok')
      var btnDelId = getRandom('btn-del')

      // 是否显示“删除链接”
      var delBtnDisplay = this._active ? 'inline-block' : 'none'

      // 初始化并显示 panel
      var panel = new Panel(this, {
        width: 300,
        // panel 中可包含多个 tab
        tabs: [
          {
            // tab 的标题
            title: '链接',
            // 模版
            tpl:
              '<div>\n                            <input id="' +
              inputTextId +
              '" type="text" class="block" value="' +
              text +
              '" placeholder="\u94FE\u63A5\u6587\u5B57"/></td>\n                            <input id="' +
              inputLinkId +
              '" type="text" class="block" value="' +
              link +
              '" placeholder="http://..."/></td>\n                            <div class="w-e-button-container">\n                                <button id="' +
              btnOkId +
              '" class="right">\u63D2\u5165</button>\n                                <button id="' +
              btnDelId +
              '" class="gray right" style="display:' +
              delBtnDisplay +
              '">\u5220\u9664\u94FE\u63A5</button>\n                            </div>\n                        </div>',
            // 事件绑定
            events: [
              // 插入链接
              {
                selector: '#' + btnOkId,
                type: 'click',
                fn: function fn() {
                  // 执行插入链接
                  var $link = $('#' + inputLinkId)
                  var $text = $('#' + inputTextId)
                  var link = $link.val()
                  var text = $text.val()
                  _this._insertLink(text, link)

                  // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                  return true
                },
              },
              // 删除链接
              {
                selector: '#' + btnDelId,
                type: 'click',
                fn: function fn() {
                  // 执行删除链接
                  _this._delLink()

                  // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                  return true
                },
              },
            ],
          }, // tab end
        ], // tabs end
      })

      // 显示 panel
      panel.show()

      // 记录属性
      this.panel = panel
    },

    // 删除当前链接
    _delLink: function _delLink() {
      if (!this._active) {
        return
      }
      var editor = this.editor
      var $selectionELem = editor.selection.getSelectionContainerElem()
      if (!$selectionELem) {
        return
      }
      var selectionText = editor.selection.getSelectionText()
      editor.cmd.do('insertHTML', '<span>' + selectionText + '</span>')
    },

    // 插入链接
    _insertLink: function _insertLink(text, link) {
      var editor = this.editor
      var config = editor.config
      var linkCheck = config.linkCheck
      var checkResult = true // 默认为 true
      if (linkCheck && typeof linkCheck === 'function') {
        checkResult = linkCheck(text, link)
      }
      if (checkResult === true) {
        editor.cmd.do(
          'insertHTML',
          '<a href="' + link + '" target="_blank">' + text + '</a>'
        )
      } else {
        alert(checkResult)
      }
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor
      var $elem = this.$elem
      var $selectionELem = editor.selection.getSelectionContainerElem()
      if (!$selectionELem) {
        return
      }
      if ($selectionELem.getNodeName() === 'A') {
        this._active = true
        $elem.addClass('w-e-active')
      } else {
        this._active = false
        $elem.removeClass('w-e-active')
      }
    },
  }

  /*
    italic-menu
*/
  // 构造函数
  function Italic(editor) {
    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu">\n            <i class="w-e-icon-italic"></i>\n        </div>'
    )
    this.type = 'click'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Italic.prototype = {
    constructor: Italic,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里
      var editor = this.editor
      var isSeleEmpty = editor.selection.isSelectionEmpty()

      if (isSeleEmpty) {
        // 选区是空的，插入并选中一个“空白”
        editor.selection.createEmptyRange()
      }

      // 执行 italic 命令
      editor.cmd.do('italic')

      if (isSeleEmpty) {
        // 需要将选取折叠起来
        editor.selection.collapseRange()
        editor.selection.restoreSelection()
      }
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor
      var $elem = this.$elem
      if (editor.cmd.queryCommandState('italic')) {
        this._active = true
        $elem.addClass('w-e-active')
      } else {
        this._active = false
        $elem.removeClass('w-e-active')
      }
    },
  }

  /* redo-menu */
  // 构造函数
  function Redo(editor) {
    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu">\n            <i class="w-e-icon-redo"></i>\n        </div>'
    )
    this.type = 'click'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Redo.prototype = {
    constructor: Redo,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里
      var editor = this.editor

      // 执行 redo 命令
      editor.cmd.do('redo')
    },
  }

  /*
    strikeThrough-menu
*/
  // 构造函数
  function StrikeThrough(editor) {
    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu">\n            <i class="w-e-icon-strikethrough"></i>\n        </div>'
    )
    this.type = 'click'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  StrikeThrough.prototype = {
    constructor: StrikeThrough,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里
      var editor = this.editor
      var isSeleEmpty = editor.selection.isSelectionEmpty()

      if (isSeleEmpty) {
        // 选区是空的，插入并选中一个“空白”
        editor.selection.createEmptyRange()
      }

      // 执行 strikeThrough 命令
      editor.cmd.do('strikeThrough')

      if (isSeleEmpty) {
        // 需要将选取折叠起来
        editor.selection.collapseRange()
        editor.selection.restoreSelection()
      }
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor
      var $elem = this.$elem
      if (editor.cmd.queryCommandState('strikeThrough')) {
        this._active = true
        $elem.addClass('w-e-active')
      } else {
        this._active = false
        $elem.removeClass('w-e-active')
      }
    },
  }

  /*
    underline-menu
*/
  // 构造函数
  function Underline(editor) {
    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu">\n            <i class="w-e-icon-underline"></i>\n        </div>'
    )
    this.type = 'click'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Underline.prototype = {
    constructor: Underline,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里
      var editor = this.editor
      var isSeleEmpty = editor.selection.isSelectionEmpty()

      if (isSeleEmpty) {
        // 选区是空的，插入并选中一个“空白”
        editor.selection.createEmptyRange()
      }

      // 执行 underline 命令
      editor.cmd.do('underline')

      if (isSeleEmpty) {
        // 需要将选取折叠起来
        editor.selection.collapseRange()
        editor.selection.restoreSelection()
      }
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor
      var $elem = this.$elem
      if (editor.cmd.queryCommandState('underline')) {
        this._active = true
        $elem.addClass('w-e-active')
      } else {
        this._active = false
        $elem.removeClass('w-e-active')
      }
    },
  }

  /*
    undo-menu
*/
  // 构造函数
  function Undo(editor) {
    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu">\n            <i class="w-e-icon-undo"></i>\n        </div>'
    )
    this.type = 'click'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Undo.prototype = {
    constructor: Undo,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里
      var editor = this.editor

      // 执行 undo 命令
      editor.cmd.do('undo')
    },
  }

  /*
    menu - list
*/
  // 构造函数
  function List(editor) {
    var _this = this

    this.editor = editor
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-list2"></i></div>')
    this.type = 'droplist'

    // 当前是否 active 状态
    this._active = false

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 120,
      $title: $('<p>设置列表</p>'),
      type: 'list',
      // droplist 以列表形式展示
      list: [
        {
          $elem: $(
            '<span><i class="w-e-icon-list-numbered"></i> 有序列表</span>'
          ),
          value: 'insertOrderedList',
        },
        {
          $elem: $('<span><i class="w-e-icon-list2"></i> 无序列表</span>'),
          value: 'insertUnorderedList',
        },
      ],
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 List 对象
        _this._command(value)
      },
    })
  }

  // 原型
  List.prototype = {
    constructor: List,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor
      var $textElem = editor.$textElem
      editor.selection.restoreSelection()
      if (editor.cmd.queryCommandState(value)) {
        return
      }
      editor.cmd.do(value)

      // 验证列表是否被包裹在 <p> 之内
      var $selectionElem = editor.selection.getSelectionContainerElem()
      if ($selectionElem.getNodeName() === 'LI') {
        $selectionElem = $selectionElem.parent()
      }
      if (/^ol|ul$/i.test($selectionElem.getNodeName()) === false) {
        return
      }
      if ($selectionElem.equal($textElem)) {
        // 证明是顶级标签，没有被 <p> 包裹
        return
      }
      var $parent = $selectionElem.parent()
      if ($parent.equal($textElem)) {
        // $parent 是顶级标签，不能删除
        return
      }

      $selectionElem.insertAfter($parent)
      $parent.remove()
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor
      var $elem = this.$elem
      if (
        editor.cmd.queryCommandState('insertUnOrderedList') ||
        editor.cmd.queryCommandState('insertOrderedList')
      ) {
        this._active = true
        $elem.addClass('w-e-active')
      } else {
        this._active = false
        $elem.removeClass('w-e-active')
      }
    },
  }

  /*
    menu - justify
*/
  // 构造函数
  function Justify(editor) {
    var _this = this

    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu"><i class="w-e-icon-paragraph-left"></i></div>'
    )
    this.type = 'droplist'

    // 当前是否 active 状态
    this._active = false

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 100,
      $title: $('<p>对齐方式</p>'),
      type: 'list',
      // droplist 以列表形式展示
      list: [
        {
          $elem: $('<span><i class="w-e-icon-paragraph-left"></i> 靠左</span>'),
          value: 'justifyLeft',
        },
        {
          $elem: $(
            '<span><i class="w-e-icon-paragraph-center"></i> 居中</span>'
          ),
          value: 'justifyCenter',
        },
        {
          $elem: $(
            '<span><i class="w-e-icon-paragraph-right"></i> 靠右</span>'
          ),
          value: 'justifyRight',
        },
      ],
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 List 对象
        _this._command(value)
      },
    })
  }

  // 原型
  Justify.prototype = {
    constructor: Justify,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor
      editor.cmd.do(value)
    },
  }

  /*
    menu - Forecolor
*/
  // 构造函数
  function ForeColor(editor) {
    var _this = this

    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu"><i class="w-e-icon-pencil2"></i></div>'
    )
    this.type = 'droplist'

    // 获取配置的颜色
    var config = editor.config
    var colors = config.colors || []

    // 当前是否 active 状态
    this._active = false

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 120,
      $title: $('<p>文字颜色</p>'),
      type: 'inline-block',
      // droplist 内容以 block 形式展示
      list: colors.map(function (color) {
        return {
          $elem: $(
            '<i style="color:' + color + ';" class="w-e-icon-pencil2"></i>'
          ),
          value: color,
        }
      }),
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 ForeColor 对象
        _this._command(value)
      },
    })
  }

  // 原型
  ForeColor.prototype = {
    constructor: ForeColor,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor
      editor.cmd.do('foreColor', value)
    },
  }

  /*
    menu - BackColor
*/
  // 构造函数
  function BackColor(editor) {
    var _this = this

    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu"><i class="w-e-icon-paint-brush"></i></div>'
    )
    this.type = 'droplist'

    // 获取配置的颜色
    var config = editor.config
    var colors = config.colors || []

    // 当前是否 active 状态
    this._active = false

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 120,
      $title: $('<p>背景色</p>'),
      type: 'inline-block',
      // droplist 内容以 block 形式展示
      list: colors.map(function (color) {
        return {
          $elem: $(
            '<i style="color:' + color + ';" class="w-e-icon-paint-brush"></i>'
          ),
          value: color,
        }
      }),
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 BackColor 对象
        _this._command(value)
      },
    })
  }

  // 原型
  BackColor.prototype = {
    constructor: BackColor,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor
      editor.cmd.do('backColor', value)
    },
  }

  /*
    menu - quote
*/
  // 构造函数
  function Quote(editor) {
    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu">\n            <i class="w-e-icon-quotes-left"></i>\n        </div>'
    )
    this.type = 'click'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Quote.prototype = {
    constructor: Quote,

    onClick: function onClick(e) {
      var editor = this.editor
      var $selectionElem = editor.selection.getSelectionContainerElem()
      var nodeName = $selectionElem.getNodeName()

      if (!UA.isIE()) {
        if (nodeName === 'BLOCKQUOTE') {
          // 撤销 quote
          editor.cmd.do('formatBlock', '<P>')
        } else {
          // 转换为 quote
          editor.cmd.do('formatBlock', '<BLOCKQUOTE>')
        }
        return
      }

      // IE 中不支持 formatBlock <BLOCKQUOTE> ，要用其他方式兼容
      var content = void 0,
        $targetELem = void 0
      if (nodeName === 'P') {
        // 将 P 转换为 quote
        content = $selectionElem.text()
        $targetELem = $('<blockquote>' + content + '</blockquote>')
        $targetELem.insertAfter($selectionElem)
        $selectionElem.remove()
        return
      }
      if (nodeName === 'BLOCKQUOTE') {
        // 撤销 quote
        content = $selectionElem.text()
        $targetELem = $('<p>' + content + '</p>')
        $targetELem.insertAfter($selectionElem)
        $selectionElem.remove()
      }
    },

    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor
      var $elem = this.$elem
      var reg = /^BLOCKQUOTE$/i
      var cmdValue = editor.cmd.queryCommandValue('formatBlock')
      if (reg.test(cmdValue)) {
        this._active = true
        $elem.addClass('w-e-active')
      } else {
        this._active = false
        $elem.removeClass('w-e-active')
      }
    },
  }

  /*
    menu - code
*/
  // 构造函数
  function Code(editor) {
    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu">\n            <i class="w-e-icon-terminal"></i>\n        </div>'
    )
    this.type = 'panel'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Code.prototype = {
    constructor: Code,

    onClick: function onClick(e) {
      var editor = this.editor
      var $startElem = editor.selection.getSelectionStartElem()
      var $endElem = editor.selection.getSelectionEndElem()
      var isSeleEmpty = editor.selection.isSelectionEmpty()
      var selectionText = editor.selection.getSelectionText()
      var $code = void 0

      if (!$startElem.equal($endElem)) {
        // 跨元素选择，不做处理
        editor.selection.restoreSelection()
        return
      }
      if (!isSeleEmpty) {
        // 选取不是空，用 <code> 包裹即可
        $code = $('<code>' + selectionText + '</code>')
        editor.cmd.do('insertElem', $code)
        editor.selection.createRangeByElem($code, false)
        editor.selection.restoreSelection()
        return
      }

      // 选取是空，且没有夸元素选择，则插入 <pre><code></code></prev>
      if (this._active) {
        // 选中状态，将编辑内容
        this._createPanel($startElem.html())
      } else {
        // 未选中状态，将创建内容
        this._createPanel()
      }
    },

    _createPanel: function _createPanel(value) {
      var _this = this

      // value - 要编辑的内容
      value = value || ''
      var type = !value ? 'new' : 'edit'
      var textId = getRandom('texxt')
      var btnId = getRandom('btn')

      var panel = new Panel(this, {
        width: 500,
        // 一个 Panel 包含多个 tab
        tabs: [
          {
            // 标题
            title: '插入代码',
            // 模版
            tpl:
              '<div>\n                        <textarea id="' +
              textId +
              '" style="height:145px;;">' +
              value +
              '</textarea>\n                        <div class="w-e-button-container">\n                            <button id="' +
              btnId +
              '" class="right">\u63D2\u5165</button>\n                        </div>\n                    <div>',
            // 事件绑定
            events: [
              // 插入代码
              {
                selector: '#' + btnId,
                type: 'click',
                fn: function fn() {
                  var $text = $('#' + textId)
                  var text = $text.val() || $text.html()
                  text = replaceHtmlSymbol(text)
                  if (type === 'new') {
                    // 新插入
                    _this._insertCode(text)
                  } else {
                    // 编辑更新
                    _this._updateCode(text)
                  }

                  // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                  return true
                },
              },
            ],
          }, // first tab end
        ], // tabs end
      }) // new Panel end
      // 显示 panel
      panel.show()

      // 记录属性
      this.panel = panel
    },

    // 插入代码
    _insertCode: function _insertCode(value) {
      var editor = this.editor
      editor.cmd.do(
        'insertHTML',
        '<pre><code>' + value + '</code></pre><p><br></p>'
      )
    },

    // 更新代码
    _updateCode: function _updateCode(value) {
      var editor = this.editor
      var $selectionELem = editor.selection.getSelectionContainerElem()
      if (!$selectionELem) {
        return
      }
      $selectionELem.html(value)
      editor.selection.restoreSelection()
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor
      var $elem = this.$elem
      var $selectionELem = editor.selection.getSelectionContainerElem()
      if (!$selectionELem) {
        return
      }
      var $parentElem = $selectionELem.parent()
      if (
        $selectionELem.getNodeName() === 'CODE' &&
        $parentElem.getNodeName() === 'PRE'
      ) {
        this._active = true
        $elem.addClass('w-e-active')
      } else {
        this._active = false
        $elem.removeClass('w-e-active')
      }
    },
  }

  /*
    menu - emoticon
*/
  // 构造函数
  function Emoticon(editor) {
    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu">\n            <i class="w-e-icon-happy"></i>\n        </div>'
    )
    this.type = 'panel'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Emoticon.prototype = {
    constructor: Emoticon,

    onClick: function onClick() {
      this._createPanel()
    },

    _createPanel: function _createPanel() {
      var _this = this

      var editor = this.editor
      var config = editor.config
      // 获取表情配置
      var emotions = config.emotions || []

      // 创建表情 dropPanel 的配置
      var tabConfig = []
      emotions.forEach(function (emotData) {
        var emotType = emotData.type
        var content = emotData.content || []

        // 这一组表情最终拼接出来的 html
        var faceHtml = ''

        // emoji 表情
        if (emotType === 'emoji') {
          content.forEach(function (item) {
            if (item) {
              faceHtml += '<span class="w-e-item">' + item + '</span>'
            }
          })
        }
        // 图片表情
        if (emotType === 'image') {
          content.forEach(function (item) {
            var src = item.src
            var alt = item.alt
            if (src) {
              // 加一个 data-w-e 属性，点击图片的时候不再提示编辑图片
              faceHtml +=
                '<span class="w-e-item"><img src="' +
                src +
                '" alt="' +
                alt +
                '" data-w-e="1"/></span>'
            }
          })
        }

        tabConfig.push({
          title: emotData.title,
          tpl: '<div class="w-e-emoticon-container">' + faceHtml + '</div>',
          events: [
            {
              selector: 'span.w-e-item',
              type: 'click',
              fn: function fn(e) {
                var target = e.target
                var $target = $(target)
                var nodeName = $target.getNodeName()

                var insertHtml = void 0
                if (nodeName === 'IMG') {
                  // 插入图片
                  insertHtml = $target.parent().html()
                } else {
                  // 插入 emoji
                  insertHtml = '<span>' + $target.html() + '</span>'
                }

                _this._insert(insertHtml)
                // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                return true
              },
            },
          ],
        })
      })

      var panel = new Panel(this, {
        width: 300,
        height: 200,
        // 一个 Panel 包含多个 tab
        tabs: tabConfig,
      })

      // 显示 panel
      panel.show()

      // 记录属性
      this.panel = panel
    },

    // 插入表情
    _insert: function _insert(emotHtml) {
      var editor = this.editor
      editor.cmd.do('insertHTML', emotHtml)
    },
  }

  /*
    menu - table
*/
  // 构造函数
  function Table(editor) {
    this.editor = editor
    this.$elem = $(
      '<div class="w-e-menu"><i class="w-e-icon-table2"></i></div>'
    )
    this.type = 'panel'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Table.prototype = {
    constructor: Table,

    onClick: function onClick() {
      if (this._active) {
        // 编辑现有表格
        this._createEditPanel()
      } else {
        // 插入新表格
        this._createInsertPanel()
      }
    },

    // 创建插入新表格的 panel
    _createInsertPanel: function _createInsertPanel() {
      var _this = this

      // 用到的 id
      var btnInsertId = getRandom('btn')
      var textRowNum = getRandom('row')
      var textColNum = getRandom('col')

      var panel = new Panel(this, {
        width: 250,
        // panel 包含多个 tab
        tabs: [
          {
            // 标题
            title: '插入表格',
            // 模版
            tpl:
              '<div>\n                        <p style="text-align:left; padding:5px 0;">\n                            \u521B\u5EFA\n                            <input id="' +
              textRowNum +
              '" type="text" value="5" style="width:40px;text-align:center;"/>\n                            \u884C\n                            <input id="' +
              textColNum +
              '" type="text" value="5" style="width:40px;text-align:center;"/>\n                            \u5217\u7684\u8868\u683C\n                        </p>\n                        <div class="w-e-button-container">\n                            <button id="' +
              btnInsertId +
              '" class="right">\u63D2\u5165</button>\n                        </div>\n                    </div>',
            // 事件绑定
            events: [
              {
                // 点击按钮，插入表格
                selector: '#' + btnInsertId,
                type: 'click',
                fn: function fn() {
                  var rowNum = parseInt($('#' + textRowNum).val())
                  var colNum = parseInt($('#' + textColNum).val())

                  if (rowNum && colNum && rowNum > 0 && colNum > 0) {
                    // form 数据有效
                    _this._insert(rowNum, colNum)
                  }

                  // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                  return true
                },
              },
            ],
          }, // first tab end
        ], // tabs end
      }) // panel end
      // 展示 panel
      panel.show()

      // 记录属性
      this.panel = panel
    },

    // 插入表格
    _insert: function _insert(rowNum, colNum) {
      // 拼接 table 模版
      var r = void 0,
        c = void 0
      var html =
        '<table border="0" width="100%" cellpadding="0" cellspacing="0">'
      for (r = 0; r < rowNum; r++) {
        html += '<tr>'
        if (r === 0) {
          for (c = 0; c < colNum; c++) {
            html += '<th>&nbsp;</th>'
          }
        } else {
          for (c = 0; c < colNum; c++) {
            html += '<td>&nbsp;</td>'
          }
        }
        html += '</tr>'
      }
      html += '</table><p><br></p>'

      // 执行命令
      var editor = this.editor
      editor.cmd.do('insertHTML', html)

      // 防止 firefox 下出现 resize 的控制点
      editor.cmd.do('enableObjectResizing', false)
      editor.cmd.do('enableInlineTableEditing', false)
    },

    // 创建编辑表格的 panel
    _createEditPanel: function _createEditPanel() {
      var _this2 = this

      // 可用的 id
      var addRowBtnId = getRandom('add-row')
      var addColBtnId = getRandom('add-col')
      var delRowBtnId = getRandom('del-row')
      var delColBtnId = getRandom('del-col')
      var delTableBtnId = getRandom('del-table')

      // 创建 panel 对象
      var panel = new Panel(this, {
        width: 320,
        // panel 包含多个 tab
        tabs: [
          {
            // 标题
            title: '编辑表格',
            // 模版
            tpl:
              '<div>\n                        <div class="w-e-button-container" style="border-bottom:1px solid #f1f1f1;padding-bottom:5px;margin-bottom:5px;">\n                            <button id="' +
              addRowBtnId +
              '" class="left">\u589E\u52A0\u884C</button>\n                            <button id="' +
              delRowBtnId +
              '" class="red left">\u5220\u9664\u884C</button>\n                            <button id="' +
              addColBtnId +
              '" class="left">\u589E\u52A0\u5217</button>\n                            <button id="' +
              delColBtnId +
              '" class="red left">\u5220\u9664\u5217</button>\n                        </div>\n                        <div class="w-e-button-container">\n                            <button id="' +
              delTableBtnId +
              '" class="gray left">\u5220\u9664\u8868\u683C</button>\n                        </dv>\n                    </div>',
            // 事件绑定
            events: [
              {
                // 增加行
                selector: '#' + addRowBtnId,
                type: 'click',
                fn: function fn() {
                  _this2._addRow()
                  // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                  return true
                },
              },
              {
                // 增加列
                selector: '#' + addColBtnId,
                type: 'click',
                fn: function fn() {
                  _this2._addCol()
                  // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                  return true
                },
              },
              {
                // 删除行
                selector: '#' + delRowBtnId,
                type: 'click',
                fn: function fn() {
                  _this2._delRow()
                  // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                  return true
                },
              },
              {
                // 删除列
                selector: '#' + delColBtnId,
                type: 'click',
                fn: function fn() {
                  _this2._delCol()
                  // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                  return true
                },
              },
              {
                // 删除表格
                selector: '#' + delTableBtnId,
                type: 'click',
                fn: function fn() {
                  _this2._delTable()
                  // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                  return true
                },
              },
            ],
          },
        ],
      })
      // 显示 panel
      panel.show()
    },

    // 获取选中的单元格的位置信息
    _getLocationData: function _getLocationData() {
      var result = {}
      var editor = this.editor
      var $selectionELem = editor.selection.getSelectionContainerElem()
      if (!$selectionELem) {
        return
      }
      var nodeName = $selectionELem.getNodeName()
      if (nodeName !== 'TD' && nodeName !== 'TH') {
        return
      }

      // 获取 td index
      var $tr = $selectionELem.parent()
      var $tds = $tr.children()
      var tdLength = $tds.length
      $tds.forEach(function (td, index) {
        if (td === $selectionELem[0]) {
          // 记录并跳出循环
          result.td = {
            index: index,
            elem: td,
            length: tdLength,
          }
          return false
        }
      })

      // 获取 tr index
      var $tbody = $tr.parent()
      var $trs = $tbody.children()
      var trLength = $trs.length
      $trs.forEach(function (tr, index) {
        if (tr === $tr[0]) {
          // 记录并跳出循环
          result.tr = {
            index: index,
            elem: tr,
            length: trLength,
          }
          return false
        }
      })

      // 返回结果
      return result
    },

    // 增加行
    _addRow: function _addRow() {
      // 获取当前单元格的位置信息
      var locationData = this._getLocationData()
      if (!locationData) {
        return
      }
      var trData = locationData.tr
      var $currentTr = $(trData.elem)
      var tdData = locationData.td
      var tdLength = tdData.length

      // 拼接即将插入的字符串
      var newTr = document.createElement('tr')
      var tpl = '',
        i = void 0
      for (i = 0; i < tdLength; i++) {
        tpl += '<td>&nbsp;</td>'
      }
      newTr.innerHTML = tpl
      // 插入
      $(newTr).insertAfter($currentTr)
    },

    // 增加列
    _addCol: function _addCol() {
      // 获取当前单元格的位置信息
      var locationData = this._getLocationData()
      if (!locationData) {
        return
      }
      var trData = locationData.tr
      var tdData = locationData.td
      var tdIndex = tdData.index
      var $currentTr = $(trData.elem)
      var $trParent = $currentTr.parent()
      var $trs = $trParent.children()

      // 遍历所有行
      $trs.forEach(function (tr) {
        var $tr = $(tr)
        var $tds = $tr.children()
        var $currentTd = $tds.get(tdIndex)
        var name = $currentTd.getNodeName().toLowerCase()

        // new 一个 td，并插入
        var newTd = document.createElement(name)
        $(newTd).insertAfter($currentTd)
      })
    },

    // 删除行
    _delRow: function _delRow() {
      // 获取当前单元格的位置信息
      var locationData = this._getLocationData()
      if (!locationData) {
        return
      }
      var trData = locationData.tr
      var $currentTr = $(trData.elem)
      $currentTr.remove()
    },

    // 删除列
    _delCol: function _delCol() {
      // 获取当前单元格的位置信息
      var locationData = this._getLocationData()
      if (!locationData) {
        return
      }
      var trData = locationData.tr
      var tdData = locationData.td
      var tdIndex = tdData.index
      var $currentTr = $(trData.elem)
      var $trParent = $currentTr.parent()
      var $trs = $trParent.children()

      // 遍历所有行
      $trs.forEach(function (tr) {
        var $tr = $(tr)
        var $tds = $tr.children()
        var $currentTd = $tds.get(tdIndex)
        // 删除
        $currentTd.remove()
      })
    },

    // 删除表格
    _delTable: function _delTable() {
      var editor = this.editor
      var $selectionELem = editor.selection.getSelectionContainerElem()
      if (!$selectionELem) {
        return
      }
      var $table = $selectionELem.parentUntil('table')
      if (!$table) {
        return
      }
      $table.remove()
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor
      var $elem = this.$elem
      var $selectionELem = editor.selection.getSelectionContainerElem()
      if (!$selectionELem) {
        return
      }
      var nodeName = $selectionELem.getNodeName()
      if (nodeName === 'TD' || nodeName === 'TH') {
        this._active = true
        $elem.addClass('w-e-active')
      } else {
        this._active = false
        $elem.removeClass('w-e-active')
      }
    },
  }

  /*
    menu - video
*/
  // 构造函数
  function Video(editor) {
    this.editor = editor
    // this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-play"></i></div>')
    this.type = 'panel'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Video.prototype = {
    constructor: Video,

    onClick: function onClick() {
      this._createPanel()
    },

    _createPanel: function _createPanel() {
      var _this = this
      var editor = this.editor
      var uploadImg = editor.uploadImg
      var config = editor.config

      // 创建 id
      // 上传视频id
      var upTriggerVideoId = getRandom('up-trigger-video')
      var upFileVideoId = getRandom('up-file-video')
      // 插入视频id
      var textValId = getRandom('text-val')
      var btnId = getRandom('btn')
      // tabs 的配置
      var tabsConfig = [
        {
          title: '上传视频',
          tpl:
            '<div class="w-e-up-img-container"><div id="' +
            upTriggerVideoId +
            '" class="w-e-up-btn"><i class="w-e-icon-upload2"></i></div><div style="display:none;"><input id="' +
            upFileVideoId +
            '" type="file" accept="video/*"/></div></div>',
          events: [
            {
              // 触发选择图片
              selector: '#' + upTriggerVideoId,
              type: 'click',
              fn: function fn() {
                var $file = $('#' + upFileVideoId)
                var fileElem = $file[0]
                if (fileElem) {
                  fileElem.click()
                } else {
                  // 返回 true 可关闭 panel
                  return true
                }
              },
            },
            {
              // 选择图片完毕
              selector: '#' + upFileVideoId,
              type: 'change',
              fn: function fn() {
                var $file = $('#' + upFileVideoId)
                var fileElem = $file[0]
                if (!fileElem) {
                  // 返回 true 可关闭 panel
                  return true
                }

                // 获取选中的 file 对象列表
                var fileList = fileElem.files
                if (fileList.length) {
                  uploadImg.uploadVideo(fileList)
                }

                // 返回 true 可关闭 panel
                return true
              },
            },
          ],
        },
        // first tab end
        {
          // 标题
          title: '插入视频',
          // 模版
          tpl:
            '<div><input id="' +
            textValId +
            '" type="text" class="block" placeholder="\u683C\u5F0F\u5982\uFF1A<video controls src=... ></video>"/><div class="w-e-button-container"><button id="' +
            btnId +
            '" class="right">\u63D2\u5165</button></div></div>',
          // 事件绑定
          events: [
            {
              selector: '#' + btnId,
              type: 'click',
              fn: function fn() {
                var $text = $('#' + textValId)
                var val = $text.val().trim()

                if (val) _this._insert(val) // 插入视频
                // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                return true
              },
            },
          ],
        }, // second tab end
      ] // tabs end
      // 判断 tabs 的显示
      var tabsConfigResult = []
      if (config.uploadVideoServer) {
        // 显示“上传视频”
        tabsConfigResult.push(tabsConfig[0])
      }
      if (config.showLinkVideo) {
        // 显示“网络视频”
        tabsConfigResult.push(tabsConfig[1])
      }

      // 创建 panel
      var panel = new Panel(this, {
        width: 350,
        // 一个 panel 多个 tab
        tabs: tabsConfigResult, // tabs end
      }) // panel end
      // 显示 panel
      panel.show()

      // 记录属性
      this.panel = panel
    },

    // 插入视频
    _insert: function _insert(val) {
      var editor = this.editor
      editor.cmd.do('insertHTML', val + '<p><br></p>')
    },
  }

  /*
    menu - img
*/
  // 构造函数
  function Image(editor) {
    this.editor = editor
    var imgMenuId = getRandom('w-e-img')
    this.$elem = $()
    // '<div class="w-e-menu" id="' +
    //   imgMenuId +
    //   '"><i class="w-e-icon-image"></i></div>'
    editor.imgMenuId = imgMenuId
    this.type = 'panel'

    // 当前是否 active 状态
    this._active = false
  }

  // 原型
  Image.prototype = {
    constructor: Image,

    onClick: function onClick() {
      var editor = this.editor
      var config = editor.config
      if (config.qiniu) {
        return
      }
      if (this._active) {
        this._createEditPanel()
      } else {
        this._createInsertPanel()
      }
    },

    _createEditPanel: function _createEditPanel() {
      var editor = this.editor

      // id
      var width30 = getRandom('width-30')
      var width50 = getRandom('width-50')
      var width100 = getRandom('width-100')
      var delBtn = getRandom('del-btn')

      // tab 配置
      var tabsConfig = [
        {
          title: '编辑图片',
          tpl:
            '<div>\n                    <div class="w-e-button-container" style="border-bottom:1px solid #f1f1f1;padding-bottom:5px;margin-bottom:5px;">\n                        <span style="float:left;font-size:14px;margin:4px 5px 0 5px;color:#333;">\u6700\u5927\u5BBD\u5EA6\uFF1A</span>\n                        <button id="' +
            width30 +
            '" class="left">30%</button>\n                        <button id="' +
            width50 +
            '" class="left">50%</button>\n                        <button id="' +
            width100 +
            '" class="left">100%</button>\n                    </div>\n                    <div class="w-e-button-container">\n                        <button id="' +
            delBtn +
            '" class="gray left">\u5220\u9664\u56FE\u7247</button>\n                    </dv>\n                </div>',
          events: [
            {
              selector: '#' + width30,
              type: 'click',
              fn: function fn() {
                var $img = editor._selectedImg
                if ($img) {
                  $img.css('max-width', '30%')
                }
                // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                return true
              },
            },
            {
              selector: '#' + width50,
              type: 'click',
              fn: function fn() {
                var $img = editor._selectedImg
                if ($img) {
                  $img.css('max-width', '50%')
                }
                // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                return true
              },
            },
            {
              selector: '#' + width100,
              type: 'click',
              fn: function fn() {
                var $img = editor._selectedImg
                if ($img) {
                  $img.css('max-width', '100%')
                }
                // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                return true
              },
            },
            {
              selector: '#' + delBtn,
              type: 'click',
              fn: function fn() {
                var $img = editor._selectedImg
                if ($img) {
                  $img.remove()
                }
                // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                return true
              },
            },
          ],
        },
      ]

      // 创建 panel 并显示
      var panel = new Panel(this, {
        width: 300,
        tabs: tabsConfig,
      })
      panel.show()

      // 记录属性
      this.panel = panel
    },

    _createInsertPanel: function _createInsertPanel() {
      var editor = this.editor
      var uploadImg = editor.uploadImg
      var config = editor.config

      // id
      var upTriggerId = getRandom('up-trigger')
      var upFileId = getRandom('up-file')
      var linkUrlId = getRandom('link-url')
      var linkBtnId = getRandom('link-btn')

      // tabs 的配置
      var tabsConfig = [
        {
          title: '上传图片',
          tpl:
            '<div class="w-e-up-img-container">\n                    <div id="' +
            upTriggerId +
            '" class="w-e-up-btn">\n                        <i class="w-e-icon-upload2"></i>\n                    </div>\n                    <div style="display:none;">\n                        <input id="' +
            upFileId +
            '" type="file" accept="image/jpg,image/jpeg,image/png,image/gif,image/bmp"/>\n                    </div>\n                </div>',
          events: [
            {
              // 触发选择图片
              selector: '#' + upTriggerId,
              type: 'click',
              fn: function fn() {
                var $file = $('#' + upFileId)
                var fileElem = $file[0]
                if (fileElem) {
                  fileElem.click()
                } else {
                  // 返回 true 可关闭 panel
                  return true
                }
              },
            },
            {
              // 选择图片完毕
              selector: '#' + upFileId,
              type: 'change',
              fn: function fn() {
                var $file = $('#' + upFileId)
                var fileElem = $file[0]
                if (!fileElem) {
                  // 返回 true 可关闭 panel
                  return true
                }

                // 获取选中的 file 对象列表
                var fileList = fileElem.files
                if (fileList.length) {
                  uploadImg.uploadImg(fileList)
                }

                // 返回 true 可关闭 panel
                return true
              },
            },
          ],
        },
        // first tab end
        {
          title: '网络图片',
          tpl:
            '<div>\n                    <input id="' +
            linkUrlId +
            '" type="text" class="block" placeholder="\u56FE\u7247\u94FE\u63A5"/></td>\n                    <div class="w-e-button-container">\n                        <button id="' +
            linkBtnId +
            '" class="right">\u63D2\u5165</button>\n                    </div>\n                </div>',
          events: [
            {
              selector: '#' + linkBtnId,
              type: 'click',
              fn: function fn() {
                var $linkUrl = $('#' + linkUrlId)
                var url = $linkUrl.val().trim()

                if (url) {
                  uploadImg.insertLinkImg(url)
                }

                // 返回 true 表示函数执行结束之后关闭 panel
                return true
              },
            },
          ],
        }, // second tab end
      ] // tabs end
      // 判断 tabs 的显示
      var tabsConfigResult = []
      if (
        (config.uploadImgShowBase64 ||
          config.uploadImgServer ||
          config.customUploadImg) &&
        window.FileReader
      ) {
        // 显示“上传图片”
        tabsConfigResult.push(tabsConfig[0])
      }
      if (config.showLinkImg) {
        // 显示“网络图片”
        tabsConfigResult.push(tabsConfig[1])
      }

      // 创建 panel 并显示
      var panel = new Panel(this, {
        width: 300,
        tabs: tabsConfigResult,
      })
      panel.show()

      // 记录属性
      this.panel = panel
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor
      var $elem = this.$elem
      if (editor._selectedImg) {
        this._active = true
        $elem.addClass('w-e-active')
      } else {
        this._active = false
        $elem.removeClass('w-e-active')
      }
    },
  }

  /*
    所有菜单的汇总
*/

  // 存储菜单的构造函数
  var MenuConstructors = {}

  MenuConstructors.bold = Bold

  MenuConstructors.head = Head

  MenuConstructors.fontSize = FontSize

  MenuConstructors.fontName = FontName

  MenuConstructors.link = Link

  MenuConstructors.italic = Italic

  MenuConstructors.redo = Redo

  MenuConstructors.strikeThrough = StrikeThrough

  MenuConstructors.underline = Underline

  MenuConstructors.undo = Undo

  MenuConstructors.list = List

  MenuConstructors.justify = Justify

  MenuConstructors.foreColor = ForeColor

  MenuConstructors.backColor = BackColor

  MenuConstructors.quote = Quote

  MenuConstructors.code = Code

  MenuConstructors.emoticon = Emoticon

  MenuConstructors.table = Table

  MenuConstructors.video = Video

  MenuConstructors.image = Image

  /*
    菜单集合
*/
  // 构造函数
  function Menus(editor) {
    this.editor = editor
    this.menus = {}
  }

  // 修改原型
  Menus.prototype = {
    constructor: Menus,

    // 初始化菜单
    init: function init() {
      var _this = this
      var editor = this.editor
      var config = editor.config || {}
      var configMenus = config.menus || [] // 获取配置中的菜单
      // 根据配置信息，创建菜单
      configMenus.forEach(function (menuKey) {
        var MenuConstructor = MenuConstructors[menuKey]
        if (MenuConstructor && typeof MenuConstructor === 'function') {
          // 创建单个菜单
          _this.menus[menuKey] = new MenuConstructor(editor)
        }
      })

      // 添加到菜单栏
      this._addToToolbar()

      // 绑定事件
      this._bindEvent()
    },

    // 添加到菜单栏
    _addToToolbar: function _addToToolbar() {
      var editor = this.editor
      var $toolbarElem = editor.$toolbarElem
      var menus = this.menus
      var config = editor.config
      // config.zIndex 是配置的编辑区域的 z-index，菜单的 z-index 得在其基础上 +1
      var zIndex = config.zIndex + 1
      objForEach(menus, function (key, menu) {
        var $elem = menu.$elem
        if ($elem) {
          // 设置 z-index
          $elem.css('z-index', zIndex)
          $toolbarElem.append($elem)
        }
      })
    },

    // 绑定菜单 click mouseenter 事件
    _bindEvent: function _bindEvent() {
      var menus = this.menus
      var editor = this.editor
      objForEach(menus, function (key, menu) {
        var type = menu.type
        if (!type) {
          return
        }
        var $elem = menu.$elem
        var droplist = menu.droplist
        var panel = menu.panel

        // 点击类型，例如 bold
        if (type === 'click' && menu.onClick) {
          $elem.on('click', function (e) {
            if (editor.selection.getRange() == null) {
              return
            }
            menu.onClick(e)
          })
        }

        // 下拉框，例如 head
        if (type === 'droplist' && droplist) {
          $elem
            .on('mouseenter', function (e) {
              if (editor.selection.getRange() == null) {
                return
              }
              // 显示
              droplist.showTimeoutId = setTimeout(function () {
                droplist.show()
              }, 200)
            })
            .on('mouseleave', function (e) {
              // 隐藏
              droplist.hideTimeoutId = setTimeout(function () {
                droplist.hide()
              }, 0)
            })
        }

        // 弹框类型，例如 link
        // if (type === 'panel' && menu.onClick) {
        //   $elem.on('click', function (e) {
        //     e.stopPropagation()
        //     if (editor.selection.getRange() == null) {
        //       return
        //     }
        //     // 在自定义事件中显示 panel
        //     menu.onClick(e)
        //   })
        // }
      })
    },

    // 尝试修改菜单状态
    changeActive: function changeActive() {
      var menus = this.menus
      objForEach(menus, function (key, menu) {
        if (menu.tryChangeActive) {
          setTimeout(function () {
            menu.tryChangeActive()
          }, 100)
        }
      })
    },
  }

  /*
    粘贴信息的处理
*/

  // 获取粘贴的纯文本
  function getPasteText(e) {
    var clipboardData =
      e.clipboardData || (e.originalEvent && e.originalEvent.clipboardData)
    var pasteText = void 0
    if (clipboardData == null) {
      pasteText = window.clipboardData && window.clipboardData.getData('text')
    } else {
      pasteText = clipboardData.getData('text/plain')
    }

    return replaceHtmlSymbol(pasteText)
  }

  // 获取粘贴的html
  function getPasteHtml(e, filterStyle, ignoreImg) {
    var clipboardData =
      e.clipboardData || (e.originalEvent && e.originalEvent.clipboardData)
    var pasteText = void 0,
      pasteHtml = void 0
    if (clipboardData == null) {
      pasteText = window.clipboardData && window.clipboardData.getData('text')
    } else {
      pasteText = clipboardData.getData('text/plain')
      pasteHtml = clipboardData.getData('text/html')
    }
    if (!pasteHtml && pasteText) {
      pasteHtml = '<p>' + replaceHtmlSymbol(pasteText) + '</p>'
    }
    if (!pasteHtml) {
      return
    }

    // 过滤word中状态过来的无用字符
    var docSplitHtml = pasteHtml.split('</html>')
    if (docSplitHtml.length === 2) {
      pasteHtml = docSplitHtml[0]
    }

    // 过滤无用标签
    pasteHtml = pasteHtml.replace(/<(meta|script|link).+?>/gim, '')
    // 去掉注释
    pasteHtml = pasteHtml.replace(/<!--.*?-->/gm, '')
    // 过滤 data-xxx 属性
    pasteHtml = pasteHtml.replace(/\s?data-.+?=('|").+?('|")/gim, '')

    if (ignoreImg) {
      // 忽略图片
      pasteHtml = pasteHtml.replace(/<img.+?>/gim, '')
    }

    if (filterStyle) {
      // 过滤样式
      pasteHtml = pasteHtml.replace(/\s?(class|style)=('|").*?('|")/gim, '')
    } else {
      // 保留样式
      pasteHtml = pasteHtml.replace(/\s?class=('|").*?('|")/gim, '')
    }

    return pasteHtml
  }

  // 获取粘贴的图片文件
  function getPasteImgs(e) {
    var result = []
    var txt = getPasteText(e)
    if (txt) {
      // 有文字，就忽略图片
      return result
    }

    var clipboardData =
      e.clipboardData ||
      (e.originalEvent && e.originalEvent.clipboardData) ||
      {}
    var items = clipboardData.items
    if (!items) {
      return result
    }

    objForEach(items, function (key, value) {
      var type = value.type
      if (/image/i.test(type)) {
        result.push(value.getAsFile())
      }
    })

    return result
  }

  /*
    编辑区域
*/

  // 获取一个 elem.childNodes 的 JSON 数据
  function getChildrenJSON($elem) {
    var result = []
    var $children = $elem.childNodes() || [] // 注意 childNodes() 可以获取文本节点
    $children.forEach(function (curElem) {
      var elemResult = void 0
      var nodeType = curElem.nodeType

      // 文本节点
      if (nodeType === 3) {
        elemResult = curElem.textContent
        elemResult = replaceHtmlSymbol(elemResult)
      }

      // 普通 DOM 节点
      if (nodeType === 1) {
        elemResult = {}

        // tag
        elemResult.tag = curElem.nodeName.toLowerCase()
        // attr
        var attrData = []
        var attrList = curElem.attributes || {}
        var attrListLength = attrList.length || 0
        for (var i = 0; i < attrListLength; i++) {
          var attr = attrList[i]
          attrData.push({
            name: attr.name,
            value: attr.value,
          })
        }
        elemResult.attrs = attrData
        // children（递归）
        elemResult.children = getChildrenJSON($(curElem))
      }

      result.push(elemResult)
    })
    return result
  }

  // 构造函数
  function Text(editor) {
    this.editor = editor
  }

  // 修改原型
  Text.prototype = {
    constructor: Text,

    // 初始化
    init: function init() {
      // 绑定事件
      this._bindEvent()
    },

    // 清空内容
    clear: function clear() {
      this.html('<p><br></p>')
    },

    // 获取 设置 html
    html: function html(val) {
      var editor = this.editor
      var $textElem = editor.$textElem
      var html = void 0
      if (val == null) {
        html = $textElem.html()
        // 未选中任何内容的时候点击“加粗”或者“斜体”等按钮，就得需要一个空的占位符 &#8203 ，这里替换掉
        html = html.replace(/\u200b/gm, '')
        return html
      } else {
        $textElem.html(val)

        // 初始化选取，将光标定位到内容尾部
        editor.initSelection()
      }
    },

    // 获取 JSON
    getJSON: function getJSON() {
      var editor = this.editor
      var $textElem = editor.$textElem
      return getChildrenJSON($textElem)
    },

    // 获取 设置 text
    text: function text(val) {
      var editor = this.editor
      var $textElem = editor.$textElem
      var text = void 0
      if (val == null) {
        text = $textElem.text()
        // 未选中任何内容的时候点击“加粗”或者“斜体”等按钮，就得需要一个空的占位符 &#8203 ，这里替换掉
        text = text.replace(/\u200b/gm, '')
        return text
      } else {
        $textElem.text('<p>' + val + '</p>')

        // 初始化选取，将光标定位到内容尾部
        editor.initSelection()
      }
    },

    // 追加内容
    append: function append(html) {
      var editor = this.editor
      var $textElem = editor.$textElem
      $textElem.append($(html))

      // 初始化选取，将光标定位到内容尾部
      editor.initSelection()
    },

    // 绑定事件
    _bindEvent: function _bindEvent() {
      // 实时保存选取
      this._saveRangeRealTime()

      // 按回车建时的特殊处理
      this._enterKeyHandle()

      // 清空时保留 <p><br></p>
      this._clearHandle()

      // 粘贴事件（粘贴文字，粘贴图片）
      this._pasteHandle()

      // tab 特殊处理
      this._tabHandle()

      // img 点击
      this._imgHandle()

      // 拖拽事件
      this._dragHandle()
    },

    // 实时保存选取
    _saveRangeRealTime: function _saveRangeRealTime() {
      var editor = this.editor
      var $textElem = editor.$textElem

      // 保存当前的选区
      function saveRange(e) {
        // 随时保存选区
        editor.selection.saveRange()
        // 更新按钮 ative 状态
        editor.menus.changeActive()
      }
      // 按键后保存
      $textElem.on('keyup', saveRange)
      $textElem.on('mousedown', function (e) {
        // mousedown 状态下，鼠标滑动到编辑区域外面，也需要保存选区
        $textElem.on('mouseleave', saveRange)
      })
      $textElem.on('mouseup', function (e) {
        saveRange()
        // 在编辑器区域之内完成点击，取消鼠标滑动到编辑区外面的事件
        $textElem.off('mouseleave', saveRange)
      })
    },

    // 按回车键时的特殊处理
    _enterKeyHandle: function _enterKeyHandle() {
      var editor = this.editor
      var $textElem = editor.$textElem

      function insertEmptyP($selectionElem) {
        var $p = $('<p><br></p>')
        $p.insertBefore($selectionElem)
        editor.selection.createRangeByElem($p, true)
        editor.selection.restoreSelection()
        $selectionElem.remove()
      }

      // 将回车之后生成的非 <p> 的顶级标签，改为 <p>
      function pHandle(e) {
        var $selectionElem = editor.selection.getSelectionContainerElem()
        var $parentElem = $selectionElem.parent()

        if ($parentElem.html() === '<code><br></code>') {
          // 回车之前光标所在一个 <p><code>.....</code></p> ，忽然回车生成一个空的 <p><code><br></code></p>
          // 而且继续回车跳不出去，因此只能特殊处理
          insertEmptyP($selectionElem)
          return
        }

        if (!$parentElem.equal($textElem)) {
          // 不是顶级标签
          return
        }

        var nodeName = $selectionElem.getNodeName()
        if (nodeName === 'P') {
          // 当前的标签是 P ，不用做处理
          return
        }

        if ($selectionElem.text()) {
          // 有内容，不做处理
          return
        }

        // 插入 <p> ，并将选取定位到 <p>，删除当前标签
        insertEmptyP($selectionElem)
      }

      $textElem.on('keyup', function (e) {
        if (e.keyCode !== 13) {
          // 不是回车键
          return
        }
        // 将回车之后生成的非 <p> 的顶级标签，改为 <p>
        pHandle(e)
      })

      // <pre><code></code></pre> 回车时 特殊处理
      function codeHandle(e) {
        var $selectionElem = editor.selection.getSelectionContainerElem()
        if (!$selectionElem) {
          return
        }
        var $parentElem = $selectionElem.parent()
        var selectionNodeName = $selectionElem.getNodeName()
        var parentNodeName = $parentElem.getNodeName()

        if (selectionNodeName !== 'CODE' || parentNodeName !== 'PRE') {
          // 不符合要求 忽略
          return
        }

        if (!editor.cmd.queryCommandSupported('insertHTML')) {
          // 必须原生支持 insertHTML 命令
          return
        }

        // 处理：光标定位到代码末尾，联系点击两次回车，即跳出代码块
        if (editor._willBreakCode === true) {
          // 此时可以跳出代码块
          // 插入 <p> ，并将选取定位到 <p>
          var $p = $('<p><br></p>')
          $p.insertAfter($parentElem)
          editor.selection.createRangeByElem($p, true)
          editor.selection.restoreSelection()

          // 修改状态
          editor._willBreakCode = false

          e.preventDefault()
          return
        }

        var _startOffset = editor.selection.getRange().startOffset

        // 处理：回车时，不能插入 <br> 而是插入 \n ，因为是在 pre 标签里面
        editor.cmd.do('insertHTML', '\n')
        editor.selection.saveRange()
        if (editor.selection.getRange().startOffset === _startOffset) {
          // 没起作用，再来一遍
          editor.cmd.do('insertHTML', '\n')
        }

        var codeLength = $selectionElem.html().length
        if (editor.selection.getRange().startOffset + 1 === codeLength) {
          // 说明光标在代码最后的位置，执行了回车操作
          // 记录下来，以便下次回车时候跳出 code
          editor._willBreakCode = true
        }

        // 阻止默认行为
        e.preventDefault()
      }

      $textElem.on('keydown', function (e) {
        if (e.keyCode !== 13) {
          // 不是回车键
          // 取消即将跳转代码块的记录
          editor._willBreakCode = false
          return
        }
        // <pre><code></code></pre> 回车时 特殊处理
        codeHandle(e)
      })
    },

    // 清空时保留 <p><br></p>
    _clearHandle: function _clearHandle() {
      var editor = this.editor
      var $textElem = editor.$textElem

      $textElem.on('keydown', function (e) {
        if (e.keyCode !== 8) {
          return
        }
        var txtHtml = $textElem.html().toLowerCase().trim()
        if (txtHtml === '<p><br></p>') {
          // 最后剩下一个空行，就不再删除了
          e.preventDefault()
          return
        }
      })

      $textElem.on('keyup', function (e) {
        if (e.keyCode !== 8) {
          return
        }
        var $p = void 0
        var txtHtml = $textElem.html().toLowerCase().trim()

        // firefox 时用 txtHtml === '<br>' 判断，其他用 !txtHtml 判断
        if (!txtHtml || txtHtml === '<br>') {
          // 内容空了
          $p = $('<p><br/></p>')
          $textElem.html('') // 一定要先清空，否则在 firefox 下有问题
          $textElem.append($p)
          editor.selection.createRangeByElem($p, false, true)
          editor.selection.restoreSelection()
        }
      })
    },

    // 粘贴事件（粘贴文字 粘贴图片）
    _pasteHandle: function _pasteHandle() {
      var editor = this.editor
      var config = editor.config
      var pasteFilterStyle = config.pasteFilterStyle
      var pasteTextHandle = config.pasteTextHandle
      var ignoreImg = config.pasteIgnoreImg
      var $textElem = editor.$textElem

      // 粘贴图片、文本的事件，每次只能执行一个
      // 判断该次粘贴事件是否可以执行
      var pasteTime = 0
      function canDo() {
        var now = Date.now()
        var flag = false
        if (now - pasteTime >= 100) {
          // 间隔大于 100 ms ，可以执行
          flag = true
        }
        pasteTime = now
        return flag
      }
      function resetTime() {
        pasteTime = 0
      }

      // 粘贴文字
      $textElem.on('paste', function (e) {
        if (UA.isIE()) {
          return
        } else {
          // 阻止默认行为，使用 execCommand 的粘贴命令
          e.preventDefault()
        }

        // 粘贴图片和文本，只能同时使用一个
        if (!canDo()) {
          return
        }

        // 获取粘贴的文字
        var pasteHtml = getPasteHtml(e, pasteFilterStyle, ignoreImg)
        var pasteText = getPasteText(e)
        pasteText = pasteText.replace(/\n/gm, '<br>')

        var $selectionElem = editor.selection.getSelectionContainerElem()
        if (!$selectionElem) {
          return
        }
        var nodeName = $selectionElem.getNodeName()

        // code 中只能粘贴纯文本
        if (nodeName === 'CODE' || nodeName === 'PRE') {
          if (pasteTextHandle && isFunction(pasteTextHandle)) {
            // 用户自定义过滤处理粘贴内容
            pasteText = '' + (pasteTextHandle(pasteText) || '')
          }
          editor.cmd.do('insertHTML', '<p>' + pasteText + '</p>')
          return
        }

        // 先放开注释，有问题再追查 ————
        // // 表格中忽略，可能会出现异常问题
        // if (nodeName === 'TD' || nodeName === 'TH') {
        //     return
        // }
        if (!pasteHtml) {
          // 没有内容，可继续执行下面的图片粘贴
          resetTime()
          return
        }
        try {
          // firefox 中，获取的 pasteHtml 可能是没有 <ul> 包裹的 <li>
          // 因此执行 insertHTML 会报错
          if (pasteTextHandle && isFunction(pasteTextHandle)) {
            // 用户自定义过滤处理粘贴内容
            pasteHtml = '' + (pasteTextHandle(pasteHtml) || '')
          }
          editor.cmd.do('insertHTML', pasteHtml)
        } catch (ex) {
          // 此时使用 pasteText 来兼容一下
          if (pasteTextHandle && isFunction(pasteTextHandle)) {
            // 用户自定义过滤处理粘贴内容
            pasteText = '' + (pasteTextHandle(pasteText) || '')
          }
          editor.cmd.do('insertHTML', '<p>' + pasteText + '</p>')
        }
      })

      // 粘贴图片
      $textElem.on('paste', function (e) {
        if (UA.isIE()) {
          return
        } else {
          e.preventDefault()
        }

        // 粘贴图片和文本，只能同时使用一个
        if (!canDo()) {
          return
        }

        // 获取粘贴的图片
        var pasteFiles = getPasteImgs(e)
        if (!pasteFiles || !pasteFiles.length) {
          return
        }

        // 获取当前的元素
        var $selectionElem = editor.selection.getSelectionContainerElem()
        if (!$selectionElem) {
          return
        }
        var nodeName = $selectionElem.getNodeName()

        // code 中粘贴忽略
        if (nodeName === 'CODE' || nodeName === 'PRE') {
          return
        }

        // 上传图片
        var uploadImg = editor.uploadImg
        uploadImg.uploadImg(pasteFiles)
      })
    },

    // tab 特殊处理
    _tabHandle: function _tabHandle() {
      var editor = this.editor
      var $textElem = editor.$textElem

      $textElem.on('keydown', function (e) {
        if (e.keyCode !== 9) {
          return
        }
        if (!editor.cmd.queryCommandSupported('insertHTML')) {
          // 必须原生支持 insertHTML 命令
          return
        }
        var $selectionElem = editor.selection.getSelectionContainerElem()
        if (!$selectionElem) {
          return
        }
        var $parentElem = $selectionElem.parent()
        var selectionNodeName = $selectionElem.getNodeName()
        var parentNodeName = $parentElem.getNodeName()

        if (selectionNodeName === 'CODE' && parentNodeName === 'PRE') {
          // <pre><code> 里面
          editor.cmd.do('insertHTML', '    ')
        } else {
          // 普通文字
          editor.cmd.do('insertHTML', '&nbsp;&nbsp;&nbsp;&nbsp;')
        }

        e.preventDefault()
      })
    },

    // img 点击
    _imgHandle: function _imgHandle() {
      var editor = this.editor
      var $textElem = editor.$textElem

      // 为图片增加 selected 样式
      $textElem.on('click', 'img', function (e) {
        var img = this
        var $img = $(img)

        if ($img.attr('data-w-e') === '1') {
          // 是表情图片，忽略
          return
        }

        // 记录当前点击过的图片
        editor._selectedImg = $img

        // 修改选区并 restore ，防止用户此时点击退格键，会删除其他内容
        editor.selection.createRangeByElem($img)
        editor.selection.restoreSelection()
      })

      // 去掉图片的 selected 样式
      $textElem.on('click  keyup', function (e) {
        if (e.target.matches('img')) {
          // 点击的是图片，忽略
          return
        }
        // 删除记录
        editor._selectedImg = null
      })
    },

    // 拖拽事件
    _dragHandle: function _dragHandle() {
      var editor = this.editor

      // 禁用 document 拖拽事件
      var $document = $(document)
      $document.on('dragleave drop dragenter dragover', function (e) {
        e.preventDefault()
      })

      // 添加编辑区域拖拽事件
      var $textElem = editor.$textElem
      $textElem.on('drop', function (e) {
        e.preventDefault()
        var files = e.dataTransfer && e.dataTransfer.files
        if (!files || !files.length) {
          return
        }

        // 上传图片
        var uploadImg = editor.uploadImg
        uploadImg.uploadImg(files)
      })
    },
  }

  /*
    命令，封装 document.execCommand
*/

  // 构造函数
  function Command(editor) {
    this.editor = editor
  }

  // 修改原型
  Command.prototype = {
    constructor: Command,

    // 执行命令
    do: function _do(name, value) {
      var editor = this.editor

      // 使用 styleWithCSS
      if (!editor._useStyleWithCSS) {
        document.execCommand('styleWithCSS', null, true)
        editor._useStyleWithCSS = true
      }

      // 如果无选区，忽略
      if (!editor.selection.getRange()) {
        return
      }

      // 恢复选取
      editor.selection.restoreSelection()

      // 执行
      var _name = '_' + name
      if (this[_name]) {
        // 有自定义事件
        this[_name](value)
      } else {
        // 默认 command
        this._execCommand(name, value)
      }

      // 修改菜单状态
      editor.menus.changeActive()

      // 最后，恢复选取保证光标在原来的位置闪烁
      editor.selection.saveRange()
      editor.selection.restoreSelection()

      // 触发 onchange
      editor.change && editor.change()
    },

    // 自定义 insertHTML 事件
    _insertHTML: function _insertHTML(html) {
      var editor = this.editor
      var range = editor.selection.getRange()

      if (this.queryCommandSupported('insertHTML')) {
        // W3C
        this._execCommand('insertHTML', html)
      } else if (range.insertNode) {
        // IE
        range.deleteContents()
        range.insertNode($(html)[0])
      } else if (range.pasteHTML) {
        // IE <= 10
        range.pasteHTML(html)
      }
    },

    // 插入 elem
    _insertElem: function _insertElem($elem) {
      var editor = this.editor
      var range = editor.selection.getRange()

      if (range.insertNode) {
        range.deleteContents()
        range.insertNode($elem[0])
      }
    },

    // 封装 execCommand
    _execCommand: function _execCommand(name, value) {
      document.execCommand(name, false, value)
    },

    // 封装 document.queryCommandValue
    queryCommandValue: function queryCommandValue(name) {
      return document.queryCommandValue(name)
    },

    // 封装 document.queryCommandState
    queryCommandState: function queryCommandState(name) {
      return document.queryCommandState(name)
    },

    // 封装 document.queryCommandSupported
    queryCommandSupported: function queryCommandSupported(name) {
      return document.queryCommandSupported(name)
    },
  }

  /*
    selection range API
*/

  // 构造函数
  function API(editor) {
    this.editor = editor
    this._currentRange = null
  }

  // 修改原型
  API.prototype = {
    constructor: API,

    // 获取 range 对象
    getRange: function getRange() {
      return this._currentRange
    },

    // 保存选区
    saveRange: function saveRange(_range) {
      if (_range) {
        // 保存已有选区
        this._currentRange = _range
        return
      }

      // 获取当前的选区
      var selection = window.getSelection()
      if (selection.rangeCount === 0) {
        return
      }
      var range = selection.getRangeAt(0)

      // 判断选区内容是否在编辑内容之内
      var $containerElem = this.getSelectionContainerElem(range)
      if (!$containerElem) {
        return
      }

      // 判断选区内容是否在不可编辑区域之内
      if (
        $containerElem.attr('contenteditable') === 'false' ||
        $containerElem.parentUntil('[contenteditable=false]')
      ) {
        return
      }

      var editor = this.editor
      var $textElem = editor.$textElem
      if ($textElem.isContain($containerElem)) {
        // 是编辑内容之内的
        this._currentRange = range
      }
    },

    // 折叠选区
    collapseRange: function collapseRange(toStart) {
      if (toStart == null) {
        // 默认为 false
        toStart = false
      }
      var range = this._currentRange
      if (range) {
        range.collapse(toStart)
      }
    },

    // 选中区域的文字
    getSelectionText: function getSelectionText() {
      var range = this._currentRange
      if (range) {
        return this._currentRange.toString()
      } else {
        return ''
      }
    },

    // 选区的 $Elem
    getSelectionContainerElem: function getSelectionContainerElem(range) {
      range = range || this._currentRange
      var elem = void 0
      if (range) {
        elem = range.commonAncestorContainer
        return $(elem.nodeType === 1 ? elem : elem.parentNode)
      }
    },
    getSelectionStartElem: function getSelectionStartElem(range) {
      range = range || this._currentRange
      var elem = void 0
      if (range) {
        elem = range.startContainer
        return $(elem.nodeType === 1 ? elem : elem.parentNode)
      }
    },
    getSelectionEndElem: function getSelectionEndElem(range) {
      range = range || this._currentRange
      var elem = void 0
      if (range) {
        elem = range.endContainer
        return $(elem.nodeType === 1 ? elem : elem.parentNode)
      }
    },

    // 选区是否为空
    isSelectionEmpty: function isSelectionEmpty() {
      var range = this._currentRange
      if (range && range.startContainer) {
        if (range.startContainer === range.endContainer) {
          if (range.startOffset === range.endOffset) {
            return true
          }
        }
      }
      return false
    },

    // 恢复选区
    restoreSelection: function restoreSelection() {
      var selection = window.getSelection()
      selection.removeAllRanges()
      selection.addRange(this._currentRange)
    },

    // 创建一个空白（即 &#8203 字符）选区
    createEmptyRange: function createEmptyRange() {
      var editor = this.editor
      var range = this.getRange()
      var $elem = void 0

      if (!range) {
        // 当前无 range
        return
      }
      if (!this.isSelectionEmpty()) {
        // 当前选区必须没有内容才可以
        return
      }

      try {
        // 目前只支持 webkit 内核
        if (UA.isWebkit()) {
          // 插入 &#8203
          editor.cmd.do('insertHTML', '&#8203;')
          // 修改 offset 位置
          range.setEnd(range.endContainer, range.endOffset + 1)
          // 存储
          this.saveRange(range)
        } else {
          $elem = $('<strong>&#8203;</strong>')
          editor.cmd.do('insertElem', $elem)
          this.createRangeByElem($elem, true)
        }
      } catch (ex) {
        // 部分情况下会报错，兼容一下
      }
    },

    // 根据 $Elem 设置选区
    createRangeByElem: function createRangeByElem($elem, toStart, isContent) {
      // $elem - 经过封装的 elem
      // toStart - true 开始位置，false 结束位置
      // isContent - 是否选中Elem的内容
      if (!$elem.length) {
        return
      }

      var elem = $elem[0]
      var range = document.createRange()

      if (isContent) {
        range.selectNodeContents(elem)
      } else {
        range.selectNode(elem)
      }

      if (typeof toStart === 'boolean') {
        range.collapse(toStart)
      }

      // 存储 range
      this.saveRange(range)
    },
  }

  /*
    上传进度条
*/

  function Progress(editor) {
    this.editor = editor
    this._time = 0
    this._isShow = false
    this._isRender = false
    this._timeoutId = 0
    this.$textContainer = editor.$textContainerElem
    this.$bar = $('<div class="w-e-progress"></div>')
  }

  Progress.prototype = {
    constructor: Progress,

    show: function show(progress) {
      var _this = this

      // 状态处理
      if (this._isShow) {
        return
      }
      this._isShow = true

      // 渲染
      var $bar = this.$bar
      if (!this._isRender) {
        var $textContainer = this.$textContainer
        $textContainer.append($bar)
      } else {
        this._isRender = true
      }

      // 改变进度（节流，100ms 渲染一次）
      if (Date.now() - this._time > 100) {
        if (progress <= 1) {
          $bar.css('width', progress * 100 + '%')
          this._time = Date.now()
        }
      }

      // 隐藏
      var timeoutId = this._timeoutId
      if (timeoutId) {
        clearTimeout(timeoutId)
      }
      timeoutId = setTimeout(function () {
        _this._hide()
      }, 500)
    },

    _hide: function _hide() {
      var $bar = this.$bar
      $bar.remove()

      // 修改状态
      this._time = 0
      this._isShow = false
      this._isRender = false
    },
  }

  var _typeof =
    typeof Symbol === 'function' && typeof Symbol.iterator === 'symbol'
      ? function (obj) {
          return typeof obj
        }
      : function (obj) {
          return obj &&
            typeof Symbol === 'function' &&
            obj.constructor === Symbol &&
            obj !== Symbol.prototype
            ? 'symbol'
            : typeof obj
        }

  /*
    上传图片
*/

  // 构造函数
  function UploadImg(editor) {
    this.editor = editor
  }

  // 原型
  UploadImg.prototype = {
    constructor: UploadImg,

    // 根据 debug 弹出不同的信息
    _alert: function _alert(alertInfo, debugInfo) {
      var editor = this.editor
      var debug = editor.config.debug
      var customAlert = editor.config.customAlert

      if (debug) {
        throw new Error('wangEditor: ' + (debugInfo || alertInfo))
      } else {
        if (customAlert && typeof customAlert === 'function') {
          customAlert(alertInfo)
        } else {
          alert(alertInfo)
        }
      }
    },

    // 根据链接插入图片
    insertLinkImg: function insertLinkImg(link) {
      var _this2 = this

      if (!link) {
        return
      }
      var editor = this.editor
      var config = editor.config

      // 校验格式
      var linkImgCheck = config.linkImgCheck
      var checkResult = void 0
      if (linkImgCheck && typeof linkImgCheck === 'function') {
        checkResult = linkImgCheck(link)
        if (typeof checkResult === 'string') {
          // 校验失败，提示信息
          alert(checkResult)
          return
        }
      }

      editor.cmd.do(
        'insertHTML',
        '<img src="' + link + '" style="max-width:100%;"/>'
      )

      // 验证图片 url 是否有效，无效的话给出提示
      var img = document.createElement('img')
      img.onload = function () {
        var callback = config.linkImgCallback
        if (callback && typeof callback === 'function') {
          callback(link)
        }

        img = null
      }
      img.onerror = function () {
        img = null
        // 无法成功下载图片
        _this2._alert(
          '插入图片错误',
          'wangEditor: \u63D2\u5165\u56FE\u7247\u51FA\u9519\uFF0C\u56FE\u7247\u94FE\u63A5\u662F "' +
            link +
            '"\uFF0C\u4E0B\u8F7D\u8BE5\u94FE\u63A5\u5931\u8D25'
        )
        return
      }
      img.onabort = function () {
        img = null
      }
      img.src = link
    },

    // 上传图片
    uploadImg: function uploadImg(files) {
      var _this3 = this

      if (!files || !files.length) {
        return
      }

      // ------------------------------ 获取配置信息 ------------------------------
      var editor = this.editor
      var config = editor.config
      var uploadImgServer = config.uploadImgServer
      var uploadImgShowBase64 = config.uploadImgShowBase64

      var maxSize = config.uploadImgMaxSize
      var maxSizeM = maxSize / 1024 / 1024
      var maxLength = config.uploadImgMaxLength || 10000
      var uploadFileName = config.uploadFileName || ''
      var uploadImgParams = config.uploadImgParams || {}
      var uploadImgParamsWithUrl = config.uploadImgParamsWithUrl
      var uploadImgHeaders = config.uploadImgHeaders || {}
      var hooks = config.uploadImgHooks || {}
      var timeout = config.uploadImgTimeout || 3000
      var withCredentials = config.withCredentials
      if (withCredentials == null) {
        withCredentials = false
      }
      var customUploadImg = config.customUploadImg

      if (!customUploadImg) {
        // 没有 customUploadImg 的情况下，需要如下两个配置才能继续进行图片上传
        if (!uploadImgServer && !uploadImgShowBase64) {
          return
        }
      }

      // ------------------------------ 验证文件信息 ------------------------------
      var resultFiles = []
      var errInfo = []
      arrForEach(files, function (file) {
        var name = file.name
        var size = file.size

        // chrome 低版本 name === undefined
        if (!name || !size) {
          return
        }

        if (/\.(jpg|jpeg|png|bmp|gif|webp)$/i.test(name) === false) {
          // 后缀名不合法，不是图片
          errInfo.push('\u3010' + name + '\u3011\u4E0D\u662F\u56FE\u7247')
          return
        }
        if (maxSize < size) {
          // 上传图片过大
          errInfo.push('\u3010' + name + '\u3011\u5927\u4E8E ' + maxSizeM + 'M')
          return
        }

        // 验证通过的加入结果列表
        resultFiles.push(file)
      })
      // 抛出验证信息
      if (errInfo.length) {
        this._alert('图片验证未通过: \n' + errInfo.join('\n'))
        return
      }
      if (resultFiles.length > maxLength) {
        this._alert('一次最多上传' + maxLength + '张图片')
        return
      }
      // ------------------------------ 自定义上传 ------------------------------
      if (customUploadImg && typeof customUploadImg === 'function') {
        customUploadImg(resultFiles, this.insertLinkImg.bind(this))
        // 阻止以下代码执行
        return
      }

      // 添加图片数据
      var formdata = new FormData()
      arrForEach(resultFiles, function (file) {
        var name = uploadFileName || file.name
        formdata.append(name, file)
      })

      // ------------------------------ 上传图片 ------------------------------
      if (uploadImgServer && typeof uploadImgServer === 'string') {
        // 添加参数
        var uploadImgServerArr = uploadImgServer.split('#')
        uploadImgServer = uploadImgServerArr[0]
        var uploadImgServerHash = uploadImgServerArr[1] || ''
        objForEach(uploadImgParams, function (key, val) {
          // 因使用者反应，自定义参数不能默认 encode ，由 v3.1.1 版本开始注释掉
          // val = encodeURIComponent(val)
          // 第一，将参数拼接到 url 中
          if (uploadImgParamsWithUrl) {
            if (uploadImgServer.indexOf('?') > 0) {
              uploadImgServer += '&'
            } else {
              uploadImgServer += '?'
            }
            uploadImgServer = uploadImgServer + key + '=' + val
          }

          // 第二，将参数添加到 formdata 中
          formdata.append(key, val)
        })
        if (uploadImgServerHash) {
          uploadImgServer += '#' + uploadImgServerHash
        }

        // 定义 xhr
        var xhr = new XMLHttpRequest()
        xhr.open('POST', uploadImgServer)

        // 设置超时
        xhr.timeout = timeout
        xhr.ontimeout = function () {
          // hook - timeout
          if (hooks.timeout && typeof hooks.timeout === 'function') {
            hooks.timeout(xhr, editor)
          }

          _this3._alert('上传图片超时')
        }

        // 监控 progress
        if (xhr.upload) {
          xhr.upload.onprogress = function (e) {
            var percent = void 0
            // 进度条
            var progressBar = new Progress(editor)
            if (e.lengthComputable) {
              percent = e.loaded / e.total
              progressBar.show(percent)
            }
          }
        }

        // 返回数据
        xhr.onreadystatechange = function () {
          var result = void 0
          if (xhr.readyState === 4) {
            if (xhr.status < 200 || xhr.status >= 300) {
              // hook - error
              if (hooks.error && typeof hooks.error === 'function') {
                hooks.error(xhr, editor)
              }

              // xhr 返回状态错误
              _this3._alert(
                '上传图片发生错误',
                '\u4E0A\u4F20\u56FE\u7247\u53D1\u751F\u9519\u8BEF\uFF0C\u670D\u52A1\u5668\u8FD4\u56DE\u72B6\u6001\u662F ' +
                  xhr.status
              )
              return
            }

            result = xhr.responseText
            if (
              (typeof result === 'undefined'
                ? 'undefined'
                : _typeof(result)) !== 'object'
            ) {
              try {
                result = JSON.parse(result)
              } catch (ex) {
                // hook - fail
                if (hooks.fail && typeof hooks.fail === 'function') {
                  hooks.fail(xhr, editor, result)
                }

                _this3._alert(
                  '上传图片失败',
                  '上传图片返回结果错误，返回结果是: ' + result
                )
                return
              }
            }
            if (!hooks.customInsert && result.errno != '0') {
              // hook - fail
              if (hooks.fail && typeof hooks.fail === 'function') {
                hooks.fail(xhr, editor, result)
              }

              // 数据错误
              _this3._alert(
                '上传图片失败',
                '上传图片返回结果错误，返回结果 errno=' + result.errno
              )
            } else {
              if (
                hooks.customInsert &&
                typeof hooks.customInsert === 'function'
              ) {
                // 使用者自定义插入方法
                hooks.customInsert(
                  _this3.insertLinkImg.bind(_this3),
                  result,
                  editor
                )
              } else {
                // 将图片插入编辑器
                var data = result.data || []
                data.forEach(function (link) {
                  _this3.insertLinkImg(link)
                })
              }

              // hook - success
              if (hooks.success && typeof hooks.success === 'function') {
                hooks.success(xhr, editor, result)
              }
            }
          }
        }

        // hook - before
        if (hooks.before && typeof hooks.before === 'function') {
          var beforeResult = hooks.before(xhr, editor, resultFiles)
          if (
            beforeResult &&
            (typeof beforeResult === 'undefined'
              ? 'undefined'
              : _typeof(beforeResult)) === 'object'
          ) {
            if (beforeResult.prevent) {
              // 如果返回的结果是 {prevent: true, msg: 'xxxx'} 则表示用户放弃上传
              this._alert(beforeResult.msg)
              return
            }
          }
        }

        // 自定义 headers
        objForEach(uploadImgHeaders, function (key, val) {
          xhr.setRequestHeader(key, val)
        })

        // 跨域传 cookie
        xhr.withCredentials = withCredentials

        // 发送请求
        xhr.send(formdata)

        // 注意，要 return 。不去操作接下来的 base64 显示方式
        return
      }

      // ---------------------- 显示 base64 格式 -----------------
      if (uploadImgShowBase64) {
        arrForEach(files, function (file) {
          var _this = _this3
          var reader = new FileReader()
          reader.readAsDataURL(file)
          reader.onload = function () {
            _this.insertLinkImg(this.result)
          }
        })
      }
    },
    // 上传视频
    uploadVideo: function uploadVideo(files) {
      var _this3 = this
      if (!files || !files.length) {
        return
      }

      // ------------------------------ 获取配置信息 ------------------------------
      var editor = this.editor
      var config = editor.config
      var uploadVideoServer = config.uploadVideoServer

      var maxSize = config.uploadVideoMaxSize
      var maxSizeM = maxSize / 1024 / 1024
      var maxLength = config.uploadVideoMaxLength || 10000
      var uploadFileName = config.uploadFileName || ''
      var uploadVideoParams = config.uploadVideoParams || {}
      var uploadVideoParamsWithUrl = config.uploadVideoParamsWithUrl
      var uploadVideoHeaders = config.uploadVideoHeaders || {}
      var hooks = config.uploadVideoHooks || {}
      var timeout = config.uploadVideoTimeout || 30 * 60 * 1000 // 30分钟
      var withCredentials = config.withCredentials
      if (withCredentials == null) {
        withCredentials = false
      }
      var customUploadVideo = config.customUploadVideo

      if (!customUploadVideo) {
        // 没有 customUploadVideo 的情况下，需要如下两个配置才能继续进行图片上传
        if (!uploadVideoServer) {
          return
        }
      }

      // ------------------------------ 验证文件信息 ------------------------------
      var resultFiles = []
      var errInfo = []
      arrForEach(files, function (file) {
        var name = file.name
        var size = file.size

        // chrome 低版本 name === undefined
        if (!name || !size) {
          return
        }

        if (
          /\.(pdf|rm|rmvb|3gp|avi|mpeg|mpg|mkv|dat|asf|wmv|flv|mov|mp4|ogg|ogm)$/i.test(
            name
          ) === false
        ) {
          // 后缀名不合法，不是视频
          errInfo.push('\u3010' + name + '\u3011\u4E0D\u662F\u56FE\u7247')
          return
        }
        if (maxSize < size) {
          // 上传视频过大
          errInfo.push('\u3010' + name + '\u3011\u5927\u4E8E ' + maxSizeM + 'M')
          return
        }

        // 验证通过的加入结果列表
        resultFiles.push(file)
      })
      // 抛出验证信息
      if (errInfo.length) {
        this._alert('视频验证未通过: \n' + errInfo.join('\n'))
        return
      }
      if (resultFiles.length > maxLength) {
        this._alert('一次最多上传' + maxLength + '个视频')
        return
      }

      // ------------------------------ 自定义上传 ------------------------------
      if (customUploadVideo && typeof customUploadVideo === 'function') {
        customUploadVideo(resultFiles, this.insertLinkVideo.bind(this))
        // 阻止以下代码执行
        return
      }

      // 添加图片数据
      var formdata = new FormData()
      arrForEach(resultFiles, function (file) {
        var name = uploadFileName || file.name
        formdata.append(name, file)
      })

      // ------------------------------ 上传图片 ------------------------------
      if (uploadVideoServer && typeof uploadVideoServer === 'string') {
        // 添加参数
        var uploadVideoServerArr = uploadVideoServer.split('#')
        uploadVideoServer = uploadVideoServerArr[0]
        var uploadVideoServerHash = uploadVideoServerArr[1] || ''
        objForEach(uploadVideoParams, function (key, val) {
          // 因使用者反应，自定义参数不能默认 encode ，由 v3.1.1 版本开始注释掉
          // val = encodeURIComponent(val)
          // 第一，将参数拼接到 url 中
          if (uploadVideoParamsWithUrl) {
            if (uploadVideoServer.indexOf('?') > 0) {
              uploadVideoServer += '&'
            } else {
              uploadVideoServer += '?'
            }
            uploadVideoServer = uploadVideoServer + key + '=' + val
          }

          // 第二，将参数添加到 formdata 中
          formdata.append(key, val)
        })
        if (uploadVideoServerHash) {
          uploadVideoServer += '#' + uploadVideoServerHash
        }

        // 定义 xhr
        var xhr = new XMLHttpRequest()
        xhr.open('POST', uploadVideoServer)

        // 设置超时
        xhr.timeout = timeout
        xhr.ontimeout = function () {
          // hook - timeout
          if (hooks.timeout && typeof hooks.timeout === 'function') {
            hooks.timeout(xhr, editor)
          }

          _this3._alert('上传视频超时')
        }

        // 监控 progress
        if (xhr.upload) {
          xhr.upload.onprogress = function (e) {
            var percent = void 0
            // 进度条
            var progressBar = new Progress(editor)
            if (e.lengthComputable) {
              percent = e.loaded / e.total
              progressBar.show(percent)
            }
          }
        }

        // 返回数据
        xhr.onreadystatechange = function () {
          var result = void 0
          if (xhr.readyState === 4) {
            if (xhr.status < 200 || xhr.status >= 300) {
              // hook - error
              if (hooks.error && typeof hooks.error === 'function') {
                hooks.error(xhr, editor)
              }

              // xhr 返回状态错误
              _this3._alert(
                '上传视频发生错误',
                '\u4E0A\u4F20\u56FE\u7247\u53D1\u751F\u9519\u8BEF\uFF0C\u670D\u52A1\u5668\u8FD4\u56DE\u72B6\u6001\u662F ' +
                  xhr.status
              )
              return
            }

            result = xhr.responseText
            if (
              (typeof result === 'undefined'
                ? 'undefined'
                : _typeof(result)) !== 'object'
            ) {
              try {
                result = JSON.parse(result)
              } catch (ex) {
                // hook - fail
                if (hooks.fail && typeof hooks.fail === 'function') {
                  hooks.fail(xhr, editor, result)
                }

                _this3._alert(
                  '上传视频失败',
                  '上传视频返回结果错误，返回结果是: ' + result
                )
                return
              }
            }
            if (!hooks.customInsert && result.errno != '0') {
              // hook - fail
              if (hooks.fail && typeof hooks.fail === 'function') {
                hooks.fail(xhr, editor, result)
              }

              // 数据错误
              _this3._alert(
                '上传视频失败',
                '上传视频返回结果错误，返回结果 errno=' + result.errno
              )
            } else {
              if (
                hooks.customInsert &&
                typeof hooks.customInsert === 'function'
              ) {
                // 使用者自定义插入方法
                hooks.customInsert(
                  _this3.insertLinkVideo.bind(_this3),
                  result,
                  editor
                )
              } else {
                // 将图片插入编辑器
                var data = result.data || []
                data.forEach(function (link) {
                  _this3.insertLinkVideo(link)
                })
              }

              // hook - success
              if (hooks.success && typeof hooks.success === 'function') {
                hooks.success(xhr, editor, result)
              }
            }
          }
        }

        // hook - before
        if (hooks.before && typeof hooks.before === 'function') {
          var beforeResult = hooks.before(xhr, editor, resultFiles)
          if (
            beforeResult &&
            (typeof beforeResult === 'undefined'
              ? 'undefined'
              : _typeof(beforeResult)) === 'object'
          ) {
            if (beforeResult.prevent) {
              // 如果返回的结果是 {prevent: true, msg: 'xxxx'} 则表示用户放弃上传
              this._alert(beforeResult.msg)
              return
            }
          }
        }

        // 自定义 headers
        objForEach(uploadVideoHeaders, function (key, val) {
          xhr.setRequestHeader(key, val)
        })

        // 跨域传 cookie
        xhr.withCredentials = withCredentials

        // 发送请求
        xhr.send(formdata)
      }
    },
    // 根据链接插入视频
    insertLinkVideo: function insertLinkVideo(link) {
      if (!link) return
      var _this2 = this
      var editor = this.editor
      var config = editor.config

      // 校验格式
      var linkVideoCheck = config.linkVideoCheck
      var checkResult = void 0
      if (linkVideoCheck && typeof linkVideoCheck === 'function') {
        checkResult = linkVideoCheck(link)
        if (typeof checkResult === 'string') {
          // 校验失败，提示信息
          alert(checkResult)
          return
        }
      }

      editor.cmd.do(
        'insertHTML',
        '<video controls src="' +
          link +
          '" style="width:650px;height: 366px" frameborder="0"></video>'
      )
    },
  }

  /*
    编辑器构造函数
*/

  // id，累加
  var editorId = 1

  // 构造函数
  function Editor(toolbarSelector, textSelector) {
    if (toolbarSelector == null) {
      // 没有传入任何参数，报错
      throw new Error('错误：初始化编辑器时候未传入任何参数，请查阅文档')
    }
    // id，用以区分单个页面不同的编辑器对象
    this.id = 'wangEditor-' + editorId++

    this.toolbarSelector = toolbarSelector
    this.textSelector = textSelector

    // 自定义配置
    this.customConfig = {}
  }

  // 修改原型
  Editor.prototype = {
    constructor: Editor,

    // 初始化配置
    _initConfig: function _initConfig() {
      // _config 是默认配置，this.customConfig 是用户自定义配置，将它们 merge 之后再赋值
      var target = {}
      this.config = Object.assign(target, config, this.customConfig)

      // 将语言配置，生成正则表达式
      var langConfig = this.config.lang || {}
      var langArgs = []
      objForEach(langConfig, function (key, val) {
        // key 即需要生成正则表达式的规则，如“插入链接”
        // val 即需要被替换成的语言，如“insert link”
        langArgs.push({
          reg: new RegExp(key, 'img'),
          val: val,
        })
      })
      this.config.langArgs = langArgs
    },

    // 初始化 DOM
    _initDom: function _initDom() {
      var _this = this

      var toolbarSelector = this.toolbarSelector
      var $toolbarSelector = $(toolbarSelector)
      var textSelector = this.textSelector

      var config$$1 = this.config
      var zIndex = config$$1.zIndex

      // 定义变量
      var $toolbarElem = void 0,
        $textContainerElem = void 0,
        $textElem = void 0,
        $children = void 0

      if (textSelector == null) {
        // 只传入一个参数，即是容器的选择器或元素，toolbar 和 text 的元素自行创建
        $toolbarElem = $('<div></div>')
        $textContainerElem = $('<div></div>')

        // 将编辑器区域原有的内容，暂存起来
        $children = $toolbarSelector.children()

        // 添加到 DOM 结构中
        $toolbarSelector.append($toolbarElem).append($textContainerElem)

        // 自行创建的，需要配置默认的样式
        $toolbarElem
          .css('background-color', '#f1f1f1')
          .css('border', '1px solid #ccc')
        $textContainerElem
          .css('border', '1px solid #ccc')
          .css('border-top', 'none')
          .css('height', '300px')
      } else {
        // toolbar 和 text 的选择器都有值，记录属性
        $toolbarElem = $toolbarSelector
        $textContainerElem = $(textSelector)
        // 将编辑器区域原有的内容，暂存起来
        $children = $textContainerElem.children()
      }

      // 编辑区域
      $textElem = $('<div></div>')
      $textElem
        .attr('contenteditable', 'true')
        .css('width', '100%')
        .css('height', '100%')

      // 初始化编辑区域内容
      if ($children && $children.length) {
        $textElem.append($children)
      } else {
        $textElem.append($('<p><br></p>'))
      }

      // 编辑区域加入DOM
      $textContainerElem.append($textElem)

      // 设置通用的 class
      $toolbarElem.addClass('w-e-toolbar')
      $textContainerElem.addClass('w-e-text-container')
      $textContainerElem.css('z-index', zIndex)
      $textElem.addClass('w-e-text')

      // 添加 ID
      var toolbarElemId = getRandom('toolbar-elem')
      $toolbarElem.attr('id', toolbarElemId)
      var textElemId = getRandom('text-elem')
      $textElem.attr('id', textElemId)

      // 记录属性
      this.$toolbarElem = $toolbarElem
      this.$textContainerElem = $textContainerElem
      this.$textElem = $textElem
      this.toolbarElemId = toolbarElemId
      this.textElemId = textElemId

      // 记录输入法的开始和结束
      var compositionEnd = true
      $textContainerElem.on('compositionstart', function () {
        // 输入法开始输入
        compositionEnd = false
      })
      $textContainerElem.on('compositionend', function () {
        // 输入法结束输入
        compositionEnd = true
      })

      // 绑定 onchange
      $textContainerElem.on('click keyup', function () {
        // 输入法结束才出发 onchange
        compositionEnd && _this.change && _this.change()
      })
      $toolbarElem.on('click', function () {
        this.change && this.change()
      })

      //绑定 onfocus 与 onblur 事件
      if (config$$1.onfocus || config$$1.onblur) {
        // 当前编辑器是否是焦点状态
        this.isFocus = false

        $(document).on('click', function (e) {
          //判断当前点击元素是否在编辑器内
          var isChild = $textElem.isContain($(e.target))

          //判断当前点击元素是否为工具栏
          var isToolbar = $toolbarElem.isContain($(e.target))
          var isMenu = $toolbarElem[0] == e.target ? true : false

          if (!isChild) {
            //若为选择工具栏中的功能，则不视为成blur操作
            if (isToolbar && !isMenu) {
              return
            }

            if (_this.isFocus) {
              _this.onblur && _this.onblur()
            }
            _this.isFocus = false
          } else {
            if (!_this.isFocus) {
              _this.onfocus && _this.onfocus()
            }
            _this.isFocus = true
          }
        })
      }
    },

    // 封装 command
    _initCommand: function _initCommand() {
      this.cmd = new Command(this)
    },

    // 封装 selection range API
    _initSelectionAPI: function _initSelectionAPI() {
      this.selection = new API(this)
    },

    // 添加图片上传
    _initUploadImg: function _initUploadImg() {
      this.uploadImg = new UploadImg(this)
    },

    // 初始化菜单
    _initMenus: function _initMenus() {
      this.menus = new Menus(this)
      this.menus.init()
    },

    // 添加 text 区域
    _initText: function _initText() {
      this.txt = new Text(this)
      this.txt.init()
    },

    // 初始化选区，将光标定位到内容尾部
    initSelection: function initSelection(newLine) {
      var $textElem = this.$textElem
      var $children = $textElem.children()
      if (!$children.length) {
        // 如果编辑器区域无内容，添加一个空行，重新设置选区
        $textElem.append($('<p><br></p>'))
        this.initSelection()
        return
      }

      var $last = $children.last()

      if (newLine) {
        // 新增一个空行
        var html = $last.html().toLowerCase()
        var nodeName = $last.getNodeName()
        if ((html !== '<br>' && html !== '<br/>') || nodeName !== 'P') {
          // 最后一个元素不是 <p><br></p>，添加一个空行，重新设置选区
          $textElem.append($('<p><br></p>'))
          this.initSelection()
          return
        }
      }

      this.selection.createRangeByElem($last, false, true)
      this.selection.restoreSelection()
    },

    // 绑定事件
    _bindEvent: function _bindEvent() {
      // -------- 绑定 onchange 事件 --------
      var onChangeTimeoutId = 0
      var beforeChangeHtml = this.txt.html()
      var config$$1 = this.config

      // onchange 触发延迟时间
      var onchangeTimeout = config$$1.onchangeTimeout
      onchangeTimeout = parseInt(onchangeTimeout, 10)
      if (!onchangeTimeout || onchangeTimeout <= 0) {
        onchangeTimeout = 200
      }

      var onchange = config$$1.onchange
      if (onchange && typeof onchange === 'function') {
        // 触发 change 的有三个场景：
        // 1. $textContainerElem.on('click keyup')
        // 2. $toolbarElem.on('click')
        // 3. editor.cmd.do()
        this.change = function () {
          // 判断是否有变化
          var currentHtml = this.txt.html()

          if (currentHtml.length === beforeChangeHtml.length) {
            // 需要比较每一个字符
            if (currentHtml === beforeChangeHtml) {
              return
            }
          }

          // 执行，使用节流
          if (onChangeTimeoutId) {
            clearTimeout(onChangeTimeoutId)
          }
          onChangeTimeoutId = setTimeout(function () {
            // 触发配置的 onchange 函数
            onchange(currentHtml)
            beforeChangeHtml = currentHtml
          }, onchangeTimeout)
        }
      }

      // -------- 绑定 onblur 事件 --------
      var onblur = config$$1.onblur
      if (onblur && typeof onblur === 'function') {
        this.onblur = function () {
          var currentHtml = this.txt.html()
          onblur(currentHtml)
        }
      }

      // -------- 绑定 onfocus 事件 --------
      var onfocus = config$$1.onfocus
      if (onfocus && typeof onfocus === 'function') {
        this.onfocus = function () {
          onfocus()
        }
      }
    },

    // 创建编辑器
    create: function create() {
      // 初始化配置信息
      this._initConfig()

      // 初始化 DOM
      this._initDom()

      // 封装 command API
      this._initCommand()

      // 封装 selection range API
      this._initSelectionAPI()

      // 添加 text
      this._initText()

      // 初始化菜单
      this._initMenus()

      // 添加 图片上传
      this._initUploadImg()

      // 初始化选区，将光标定位到内容尾部
      this.initSelection(true)

      // 绑定事件
      this._bindEvent()
    },

    // 解绑所有事件（暂时不对外开放）
    _offAllEvent: function _offAllEvent() {
      $.offAll()
    },
  }

  // 检验是否浏览器环境
  try {
    document
  } catch (ex) {
    throw new Error('请在浏览器环境下运行')
  }

  // polyfill
  polyfill()

  // 这里的 `inlinecss` 将被替换成 css 代码的内容，详情可去 ./gulpfile.js 中搜索 `inlinecss` 关键字
  var inlinecss =
    '.w-e-toolbar,.w-e-text-container,.w-e-menu-panel {  padding: 0;  margin: 0;  box-sizing: border-box;}.w-e-toolbar *,.w-e-text-container *,.w-e-menu-panel * {  padding: 0;  margin: 0;  box-sizing: border-box;}.w-e-clear-fix:after {  content: "";  display: table;  clear: both;}.w-e-toolbar .w-e-droplist {  position: absolute;  left: 0;  top: 0;  background-color: #fff;  border: 1px solid #f1f1f1;  border-right-color: #ccc;  border-bottom-color: #ccc;}.w-e-toolbar .w-e-droplist .w-e-dp-title {  text-align: center;  color: #999;  line-height: 2;  border-bottom: 1px solid #f1f1f1;  font-size: 13px;}.w-e-toolbar .w-e-droplist ul.w-e-list {  list-style: none;  line-height: 1;}.w-e-toolbar .w-e-droplist ul.w-e-list li.w-e-item {  color: #333;  padding: 5px 0;}.w-e-toolbar .w-e-droplist ul.w-e-list li.w-e-item:hover {  background-color: #f1f1f1;}.w-e-toolbar .w-e-droplist ul.w-e-block {  list-style: none;  text-align: left;  padding: 5px;}.w-e-toolbar .w-e-droplist ul.w-e-block li.w-e-item {  display: inline-block;  *display: inline;  *zoom: 1;  padding: 3px 5px;}.w-e-toolbar .w-e-droplist ul.w-e-block li.w-e-item:hover {  background-color: #f1f1f1;}@font-face {  font-family: \'w-e-icon\';  src: url(data:application/x-font-woff;charset=utf-8;base64,d09GRgABAAAAABhQAAsAAAAAGAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABPUy8yAAABCAAAAGAAAABgDxIPBGNtYXAAAAFoAAABBAAAAQQrSf4BZ2FzcAAAAmwAAAAIAAAACAAAABBnbHlmAAACdAAAEvAAABLwfpUWUWhlYWQAABVkAAAANgAAADYQp00kaGhlYQAAFZwAAAAkAAAAJAfEA+FobXR4AAAVwAAAAIQAAACEeAcD7GxvY2EAABZEAAAARAAAAERBSEX+bWF4cAAAFogAAAAgAAAAIAAsALZuYW1lAAAWqAAAAYYAAAGGmUoJ+3Bvc3QAABgwAAAAIAAAACAAAwAAAAMD3gGQAAUAAAKZAswAAACPApkCzAAAAesAMwEJAAAAAAAAAAAAAAAAAAAAARAAAAAAAAAAAAAAAAAAAAAAQAAA8fwDwP/AAEADwABAAAAAAQAAAAAAAAAAAAAAIAAAAAAAAwAAAAMAAAAcAAEAAwAAABwAAwABAAAAHAAEAOgAAAA2ACAABAAWAAEAIOkG6Q3pEulH6Wbpd+m56bvpxunL6d/qDepc6l/qZepo6nHqefAN8BTxIPHc8fz//f//AAAAAAAg6QbpDekS6UfpZel36bnpu+nG6cvp3+oN6lzqX+pi6mjqcep38A3wFPEg8dzx/P/9//8AAf/jFv4W+Bb0FsAWoxaTFlIWURZHFkMWMBYDFbUVsxWxFa8VpxWiEA8QCQ7+DkMOJAADAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAQAB//8ADwABAAAAAAAAAAAAAgAANzkBAAAAAAEAAAAAAAAAAAACAAA3OQEAAAAAAQAAAAAAAAAAAAIAADc5AQAAAAACAAD/wAQAA8AABAATAAABNwEnAQMuAScTNwEjAQMlATUBBwGAgAHAQP5Anxc7MmOAAYDA/oDAAoABgP6ATgFAQAHAQP5A/p0yOxcBEU4BgP6A/YDAAYDA/oCAAAQAAAAABAADgAAQACEALQA0AAABOAExETgBMSE4ATEROAExITUhIgYVERQWMyEyNjURNCYjBxQGIyImNTQ2MzIWEyE1EwEzNwPA/IADgPyAGiYmGgOAGiYmGoA4KCg4OCgoOED9AOABAEDgA0D9AAMAQCYa/QAaJiYaAwAaJuAoODgoKDg4/biAAYD+wMAAAAIAAABABAADQAA4ADwAAAEmJy4BJyYjIgcOAQcGBwYHDgEHBhUUFx4BFxYXFhceARcWMzI3PgE3Njc2Nz4BNzY1NCcuAScmJwERDQED1TY4OXY8PT8/PTx2OTg2CwcICwMDAwMLCAcLNjg5djw9Pz89PHY5ODYLBwgLAwMDAwsIBwv9qwFA/sADIAgGBggCAgICCAYGCCkqKlktLi8vLi1ZKiopCAYGCAICAgIIBgYIKSoqWS0uLy8uLVkqKin94AGAwMAAAAAAAgDA/8ADQAPAABsAJwAAASIHDgEHBhUUFx4BFxYxMDc+ATc2NTQnLgEnJgMiJjU0NjMyFhUUBgIAQjs6VxkZMjJ4MjIyMngyMhkZVzo7QlBwcFBQcHADwBkZVzo7Qnh9fcxBQUFBzH19eEI7OlcZGf4AcFBQcHBQUHAAAAEAAAAABAADgAArAAABIgcOAQcGBycRISc+ATMyFx4BFxYVFAcOAQcGBxc2Nz4BNzY1NCcuAScmIwIANTIyXCkpI5YBgJA1i1BQRUZpHh4JCSIYGB5VKCAgLQwMKCiLXl1qA4AKCycbHCOW/oCQNDweHmlGRVArKClJICEaYCMrK2I2NjlqXV6LKCgAAQAAAAAEAAOAACoAABMUFx4BFxYXNyYnLgEnJjU0Nz4BNzYzMhYXByERByYnLgEnJiMiBw4BBwYADAwtICAoVR4YGCIJCR4eaUZFUFCLNZABgJYjKSlcMjI1al1eiygoAYA5NjZiKysjYBohIEkpKCtQRUZpHh48NJABgJYjHBsnCwooKIteXQAAAAACAAAAQAQBAwAAJgBNAAATMhceARcWFRQHDgEHBiMiJy4BJyY1JzQ3PgE3NjMVIgYHDgEHPgEhMhceARcWFRQHDgEHBiMiJy4BJyY1JzQ3PgE3NjMVIgYHDgEHPgHhLikpPRESEhE9KSkuLikpPRESASMjelJRXUB1LQkQBwgSAkkuKSk9ERISET0pKS4uKSk9ERIBIyN6UlFdQHUtCRAHCBICABIRPSkpLi4pKT0REhIRPSkpLiBdUVJ6IyOAMC4IEwoCARIRPSkpLi4pKT0REhIRPSkpLiBdUVJ6IyOAMC4IEwoCAQAABgBA/8AEAAPAAAMABwALABEAHQApAAAlIRUhESEVIREhFSEnESM1IzUTFTMVIzU3NSM1MxUVESM1MzUjNTM1IzUBgAKA/YACgP2AAoD9gMBAQECAwICAwMCAgICAgIACAIACAIDA/wDAQP3yMkCSPDJAku7+wEBAQEBAAAYAAP/ABAADwAADAAcACwAXACMALwAAASEVIREhFSERIRUhATQ2MzIWFRQGIyImETQ2MzIWFRQGIyImETQ2MzIWFRQGIyImAYACgP2AAoD9gAKA/YD+gEs1NUtLNTVLSzU1S0s1NUtLNTVLSzU1SwOAgP8AgP8AgANANUtLNTVLS/61NUtLNTVLS/61NUtLNTVLSwADAAAAAAQAA6AAAwANABQAADchFSElFSE1EyEVITUhJQkBIxEjEQAEAPwABAD8AIABAAEAAQD9YAEgASDggEBAwEBAAQCAgMABIP7g/wABAAAAAAACAB7/zAPiA7QAMwBkAAABIiYnJicmNDc2PwE+ATMyFhcWFxYUBwYPAQYiJyY0PwE2NCcuASMiBg8BBhQXFhQHDgEjAyImJyYnJjQ3Nj8BNjIXFhQPAQYUFx4BMzI2PwE2NCcmNDc2MhcWFxYUBwYPAQ4BIwG4ChMIIxISEhIjwCNZMTFZIyMSEhISI1gPLA8PD1gpKRQzHBwzFMApKQ8PCBMKuDFZIyMSEhISI1gPLA8PD1gpKRQzHBwzFMApKQ8PDysQIxISEhIjwCNZMQFECAckLS1eLS0kwCIlJSIkLS1eLS0kVxAQDysPWCl0KRQVFRTAKXQpDysQBwj+iCUiJC0tXi0tJFcQEA8rD1gpdCkUFRUUwCl0KQ8rEA8PJC0tXi0tJMAiJQAAAAAFAAD/wAQAA8AAGwA3AFMAXwBrAAAFMjc+ATc2NTQnLgEnJiMiBw4BBwYVFBceARcWEzIXHgEXFhUUBw4BBwYjIicuAScmNTQ3PgE3NhMyNz4BNzY3BgcOAQcGIyInLgEnJicWFx4BFxYnNDYzMhYVFAYjIiYlNDYzMhYVFAYjIiYCAGpdXosoKCgoi15dampdXosoKCgoi15dalZMTHEgISEgcUxMVlZMTHEgISEgcUxMVisrKlEmJiMFHBtWODc/Pzc4VhscBSMmJlEqK9UlGxslJRsbJQGAJRsbJSUbGyVAKCiLXl1qal1eiygoKCiLXl1qal1eiygoA6AhIHFMTFZWTExxICEhIHFMTFZWTExxICH+CQYGFRAQFEM6OlYYGRkYVjo6QxQQEBUGBvcoODgoKDg4KCg4OCgoODgAAAMAAP/ABAADwAAbADcAQwAAASIHDgEHBhUUFx4BFxYzMjc+ATc2NTQnLgEnJgMiJy4BJyY1NDc+ATc2MzIXHgEXFhUUBw4BBwYTBycHFwcXNxc3JzcCAGpdXosoKCgoi15dampdXosoKCgoi15dalZMTHEgISEgcUxMVlZMTHEgISEgcUxMSqCgYKCgYKCgYKCgA8AoKIteXWpqXV6LKCgoKIteXWpqXV6LKCj8YCEgcUxMVlZMTHEgISEgcUxMVlZMTHEgIQKgoKBgoKBgoKBgoKAAAQBl/8ADmwPAACkAAAEiJiMiBw4BBwYVFBYzLgE1NDY3MAcGAgcGBxUhEzM3IzceATMyNjcOAQMgRGhGcVNUbRobSUgGDWVKEBBLPDxZAT1sxizXNC1VJi5QGB09A7AQHh1hPj9BTTsLJjeZbwN9fv7Fj5AjGQIAgPYJDzdrCQcAAAAAAgAAAAAEAAOAAAkAFwAAJTMHJzMRIzcXIyURJyMRMxUhNTMRIwcRA4CAoKCAgKCggP8AQMCA/oCAwEDAwMACAMDAwP8AgP1AQEACwIABAAADAMAAAANAA4AAFgAfACgAAAE+ATU0Jy4BJyYjIREhMjc+ATc2NTQmATMyFhUUBisBEyMRMzIWFRQGAsQcIBQURi4vNf7AAYA1Ly5GFBRE/oRlKjw8KWafn58sPj4B2yJULzUvLkYUFPyAFBRGLi81RnQBRks1NUv+gAEASzU1SwAAAAACAMAAAANAA4AAHwAjAAABMxEUBw4BBwYjIicuAScmNREzERQWFx4BMzI2Nz4BNQEhFSECwIAZGVc6O0JCOzpXGRmAGxgcSSgoSRwYG/4AAoD9gAOA/mA8NDVOFhcXFk41NDwBoP5gHjgXGBsbGBc4Hv6ggAAAAAABAIAAAAOAA4AACwAAARUjATMVITUzASM1A4CA/sCA/kCAAUCAA4BA/QBAQAMAQAABAAAAAAQAA4AAPQAAARUjHgEVFAYHDgEjIiYnLgE1MxQWMzI2NTQmIyE1IS4BJy4BNTQ2Nz4BMzIWFx4BFSM0JiMiBhUUFjMyFhcEAOsVFjUwLHE+PnEsMDWAck5OcnJO/gABLAIEATA1NTAscT4+cSwwNYByTk5yck47bisBwEAdQSI1YiQhJCQhJGI1NExMNDRMQAEDASRiNTViJCEkJCEkYjU0TEw0NEwhHwAAAAcAAP/ABAADwAADAAcACwAPABMAGwAjAAATMxUjNzMVIyUzFSM3MxUjJTMVIwMTIRMzEyETAQMhAyMDIQMAgIDAwMABAICAwM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format(\'truetype\');  font-weight: normal;  font-style: normal;}[class^="w-e-icon-"],[class*=" w-e-icon-"] {  /* use !important to prevent issues with browser extensions that change fonts */  font-family: \'w-e-icon\' !important;  speak: none;  font-style: normal;  font-weight: normal;  font-variant: normal;  text-transform: none;  line-height: 1;  /* Better Font Rendering =========== */  -webkit-font-smoothing: antialiased;  -moz-osx-font-smoothing: grayscale;}.w-e-icon-close:before {  content: "\\f00d";}.w-e-icon-upload2:before {  content: "\\e9c6";}.w-e-icon-trash-o:before {  content: "\\f014";}.w-e-icon-header:before {  content: "\\f1dc";}.w-e-icon-pencil2:before {  content: "\\e906";}.w-e-icon-paint-brush:before {  content: "\\f1fc";}.w-e-icon-image:before {  content: "\\e90d";}.w-e-icon-play:before {  content: "\\e912";}.w-e-icon-location:before {  content: "\\e947";}.w-e-icon-undo:before {  content: "\\e965";}.w-e-icon-redo:before {  content: 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  // 返回
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